Nuts: Black Diamond

Yvon Chouinard bought a second-hand coal-fired forge in 1957, and started making hardened steel pitons under the Great Pacific Iron Works name. Their success led him to form Chouinard Equipment, Ltd. He partnered with Tom Frost, and they moved their operation to Ventura California in 1967. The Chouinard product line expanded into a wade variety of climbing and related outdoor gear. In 1971-1972, they introduced Hexentrics and Stoppers. Frost left the operation in 1977, and his name was removed from ice axes and other products that had born the CBouinard-Frost name.

In 1989, Chouinard Equipment was facing a liability lawsuit. Chouinard had to separate the liability of Chouinard Equipment from the deep pockets of Patagonia, which he had founded in 1973. Chouinard Equipment filed for Chapter 11 bankruptcy to protect the firm's assets. The lawsuit ultimately went nowhere. Peter Metcalf, Maria Cranor and former Chouinard Equipment employees purchased the company assets in 1989, formed Black Diamond Equipment Ltd., and moved the firm to Salt Lake City Utah.

Initially Black Diamond continued using the "C-inside-a-diamond" logo inherited from Chouinard Equipment. Over time, this logo evolved into the current "cut diamond" design. The exact year of this transition isn't precisely documented, discussions among climbers suggest that the new logo was introduced around the year 2000. Archived web pages show that the cut diamond was in use by the beginning of 2000, but the 2000 summer catalog still contains the older logo.

Copper/Steel Nuts

↑ Set 245-250: Black Diamond Copper/Steel Nuts; #1–#6

Made in USA [1994].

↑ 245: Black Diamond Copper/Steel Nut; #1

Made in USA [1994].
Size: 3x5 mm.
Cupper/steel nut soldered to stainless steel cable.
One large face stamped with the Black Diamond BD〈C〉USA logo. The opposite side is stamped with "1" with ".T" below.

↑ 246: Black Diamond Copper/Steel Nut; #2

Made in USA [1994].
Size: 4x6 mm.
Cupper/steel nut soldered to stainless steel cable.
One large face stamped with the Black Diamond BD〈C〉USA logo. The opposite side is stamped with "2" with ".T" below.

↑ 247: Black Diamond Copper/Steel Nut; #3

Made in USA [1994].
Size: 5x7 mm.
Cupper/steel nut soldered to stainless steel cable.
One large face stamped with the Black Diamond BD〈C〉USA logo. The opposite side is stamped with "3" with ".T" below.

↑ 248: Black Diamond Copper/Steel Nut; #4

Made in USA [1994].
Size: 6x8 mm.
Cupper/steel nut soldered to stainless steel cable.
One large face stamped with the Black Diamond BD〈C〉USA logo. The opposite side is stamped with "4" with ".T" below.

↑ 249: Black Diamond Copper/Steel Nut; #5

Made in USA [1994].
Size: 7x9 mm.
Cupper/steel nut soldered to stainless steel cable.
One large face stamped with the Black Diamond BD〈C〉USA logo. The opposite side is stamped with "5" with ".T" below.

↑ 250: Black Diamond Copper/Steel Nut; #6

Made in USA [1994].
Size: 9x10 mm.
Cupper/steel nut soldered to stainless steel cable.
One large face stamped with the Black Diamond BD〈C〉USA logo. The opposite side is stamped with "6" with ".T" below.

Wired Stoppers

Not Anodized, Stamped With Old Logo

↑ Set 259-271: Black Diamond Wired Stoppers; #1–#13

Made in USA [ca. 1995].

↑ 259: Black Diamond Wired Stopper; #1

Made in USA [ca. 1995].
Size: 3x9 mm.
Weight: 6 g.
Flat, double taper.
7075 Aluminum alloy.
Stamped with the BD〈C〉USA logo and "1" on one face.

↑ 260: Black Diamond Wired Stopper; #2

Made in USA [ca. 1995].
Size: 4x10 mm.
Weight: 7 g.
Flat, double taper.
7075 Aluminum alloy.
Stamped with the BD〈C〉USA logo and "2" on one face.

↑ 261: Black Diamond Wired Stopper; #3

Made in USA [ca. 1995].
Size: 5x11 mm.
Weight: 14 g.
Flat, double taper.
7075 Aluminum alloy.
Stamped with the BD〈C〉USA logo and "3" on one face.

↑ 262: Black Diamond Wired Stopper; #4

Made in USA [ca. 1995].
Size: 7x12 mm.
Weight: 15 g.
Curved, triple taper.
7075 Aluminum alloy.
Stamped with the BD〈C〉USA logo and "4" on the convex face.

↑ 263: Black Diamond Wired Stopper; #5

Made in USA [ca. 1995].
Size: 8x13 mm.
Weight: 16 g.
Curved, triple taper.
7075 Aluminum alloy.
Stamped with the BD〈C〉USA logo and "5" on the convex face.

↑ 264: Black Diamond Wired Stopper; #6

Made in USA [ca. 1995].
Size: 9x15 mm.
Weight: 32 g.
Curved, triple taper.
7075 Aluminum alloy.
Stamped with the BD〈C〉USA logo and "6" on the convex face.

↑ 265: Black Diamond Wired Stopper; #7

Made in USA [ca. 1995].
Size: 11x16 mm.
Weight: 34 g.
Curved, triple taper.
7075 Aluminum alloy.
Stamped with the BD〈C〉USA logo and "7" on the convex face.

↑ 266: Black Diamond Wired Stopper; #8

Made in USA [ca. 1995].
Size: 13x18 mm.
Weight: 37 g.
Curved, triple taper.
7075 Aluminum alloy.
Stamped with the BD〈C〉USA logo and "8" on the convex face.

↑ 267: Black Diamond Wired Stopper; #9

Made in USA [ca. 1995].
Size: 15x20 mm.
Weight: 40 g.
Curved, triple taper.
7075 Aluminum alloy.
Stamped with "STOPPER," the BD〈C〉USA logo, and "9" on the convex face.

↑ 268: Black Diamond Wired Stopper; #10

Made in USA [ca. 1995].
Size: 17x23 mm.
Weight: 44 g.
Curved, triple taper.
7075 Aluminum alloy.
Stamped with "STOPPER," the BD〈C〉USA logo, and "10" on the convex face.

↑ 269: Black Diamond Wired Stopper; #11

Made in USA [ca. 1995].
Size: 20x26 mm.
Weight: 50 g.
Curved, triple taper.
7075 Aluminum alloy.
Stamped with "STOPPER," the BD〈C〉USA logo, and "11" on the convex face.

↑ 270: Black Diamond Wired Stopper; #12

Made in USA [ca. 1995].
Size: 22x30 mm.
Weight: 58 g.
Curved, triple taper.
7075 Aluminum alloy.
Stamped with "STOPPER," the BD〈C〉USA logo, and "12" on the convex face.

↑ 271: Black Diamond Wired Stopper; #13

Made in USA [ca. 1995].
Size: 26x34 mm.
Weight: 69 g.
Curved, triple taper.
7075 Aluminum alloy.
Stamped with "STOPPER," the BD〈C〉USA logo, and "13" on the convex face.

Anodized, Stamped With New Logo

↑ Set 690-691, 415, 692-693, 581, 694-695: Black Diamond Wired Stoppers; #3–#5, #9–#13

Made in USA [2000s].
Anodized 7075 Aluminum alloy.

↑ 690: Black Diamond Wired Stopper; #3

Made in USA [2000s].
Size: 5x11 mm.
Weight: 14 g.
Flat, double taper.
Anodized 7075 Aluminum alloy.
Stamped with the Black Diamond cut-diamond logo and "3" on face.

↑ 691: Black Diamond Wired Stopper; #4

Made in USA [2000s].
Size: 7x12 mm.
Weight: 15 g.
Curved, triple taper.
Anodized 7075 Aluminum alloy.
Stamped with the Black Diamond cut-diamond logo and "4" on the convex face.

↑ 415: Black Diamond Wired Stopper; #5

Made in USA [2000s].
Size: 8x13 mm.
Weight: 16 g.
Curved, triple taper.
Anodized 7075 Aluminum alloy.
Stamped with the Black Diamond cut-diamond logo and "5" on the convex face.

↑ 692: Black Diamond Wired Stopper; #9

Made in USA [2000s].
Size: 15x20 mm.
Weight: 38 g.
Curved, triple taper.
Anodized 7075 Aluminum alloy.
Stamped with the Black Diamond cut-diamond logo and "9" on the convex face.

↑ 693: Black Diamond Wired Stopper; #10

Made in USA [2000s].
Size: 17x22 mm.
Weight: 42 g.
Curved, triple taper.
Anodized 7075 Aluminum alloy.
Stamped with the Black Diamond cut-diamond logo and "10" on the convex face.

↑ 581: Black Diamond Wired Stopper; #11

Made in USA [2000s].
Size: 20x26 mm.
Weight: 48 g.
Curved, triple taper.
Anodized 7075 Aluminum alloy.
Stamped with the Black Diamond cut-diamond logo and "11" on the convex face.

↑ 694: Black Diamond Wired Stopper; #12

Made in USA [2000s].
Size: 22x29 mm.
Weight: 56 g.
Curved, triple taper.
Anodized 7075 Aluminum alloy.
Stamped with the Black Diamond cut-diamond logo and "12" on the convex face.

↑ 695: Black Diamond Wired Stopper; #13

Made in USA [2000s].
Size: 26x34 mm.
Weight: 69 g.
Curved, triple taper.
Anodized 7075 Aluminum alloy.
Stamped with the Black Diamond cut-diamond logo and "13" on the convex face.

Wired Hexentrics

Not Anodized, Stamped With Old Logo

↑ Set 281-283: Black Diamond Wired Hexentrics; #1–#3

Made in USA [ca. 1995].
7075 Aluminum alloy.

↑ 281: Black Diamond Wired Hexentric; #1

Made in USA [1995].
Size: 11x12x18 mm.
Weight: 34 g.
7075 Aluminum alloy.
Stamped with Black Diamonds BD〈C〉USA logo and "1" on the large upper face.
Stamped with "HEXENTRIC" on the small upper face.

↑ 282: Black Diamond Wired Hexentric; #2

Made in USA [1995].
Size: 14x15x21 mm.
Weight: 38 g.
7075 Aluminum alloy.
Stamped with Black Diamonds BD〈C〉USA logo and "2" on the large upper face.
Stamped with "HEXENTRIC" on the small upper face.

↑ 283: Black Diamond Wired Hexentric; #3

Made in USA [1995].
Size: 16x18x24 mm.
Weight: 44 g.
7075 Aluminum alloy.
Stamped with Black Diamonds BD〈C〉USA logo and "3" on the large upper face.
Stamped with "HEXENTRIC" on the small upper face.

Anodized, Stamped With Old Logo

↑ Set 397-406: Black Diamond Wired Hexentrics; #1–#10

Made in USA [1990s].
Anodized 7075 Aluminum alloy.

↑ 397: Black Diamond Wired Hexentric; #1

Made in USA [1990s].
Size: 11x12x19 mm.
Anodized 7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the single-line Black Diamond BD〈C〉USA logo, and "1.".

↑ 398: Black Diamond Wired Hexentric; #2

Made in USA [1990s].
Size: 14x15x21 mm.
Weight: 23 g.
Anodized 7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the single-line Black Diamond BD〈C〉USA logo, and "2.".

↑ 399: Black Diamond Wired Hexentric; #3

Made in USA [1990s].
Size: 16x17x24 mm.
Weight: 27 g.
Anodized 7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the single-line Black Diamond BD〈C〉USA logo, and "3.".

↑ 400: Black Diamond Wired Hexentric; #4

Made in USA [1990s].
Size: 20x21x27 mm.
Weight: 51 g.
Anodized 7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the Black Diamond BD〈C〉USA logo, and "4.".

↑ 401: Black Diamond Wired Hexentric; #5

Made in USA [1990s].
Size: 23x25x31 mm.
Weight: 52 g.
Anodized 7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the Black Diamond BD〈C〉USA logo, and "5.".

↑ 402: Black Diamond Wired Hexentric; #6

Made in USA [1990s].
Size: 27x29x37 mm.
Weight: 62 g.
Anodized 7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the Black Diamond BD〈C〉USA logo, and "6.".

↑ 403: Black Diamond Wired Hexentric; #7

Made in USA [1990s].
Size: 33x35x45 mm.
Weight: 85 g.
Anodized 7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the Black Diamond BD〈C〉USA logo, and "7.".

↑ 404: Black Diamond Wired Hexentric; #8

Made in USA [1990s].
Size: 39x42x53 mm.
Weight: 94 g.
Anodized 7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the Black Diamond BD〈C〉USA logo, and "8.".

↑ 405: Black Diamond Wired Hexentric; #9

Made in USA [1990s].
Size: 46x50x62 mm.
Weight: 122 g.
Anodized 7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the Black Diamond BD〈C〉USA logo, and "9.".

↑ 406: Black Diamond Wired Hexentric; #10

Made in USA [1990s].
Size: 55x59x73 mm.
Weight: 163 g.
Anodized 7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the Black Diamond BD〈C〉USA logo, and "10.".

Anodized, Stamped With New Logo

↑ Set 582-585: Black Diamond Wired Hexentrics; #4–#7

Made in USA [ca. 2016].
Anodized, stamped with new logo.
Anodized 7075 Aluminum alloy.

↑ 687: Black Diamond Wired Hexentric; #1

Made in USA [ca. 2016].
Size: 11x12x19 mm.
Weight: 20 g.
Anodized 7075 Aluminum alloy.
Small upper face stamped with Black Diamond's cut diamond logo and "1.".

↑ 582: Black Diamond Wired Hexentric; #4

Made in USA [ca. 2016].
Size: 20x21x27 mm.
Weight: 51 g.
Anodized, stamped with new logo.
.
Small upper face stamped with Black Diamond's cut diamond logo and "4.".

↑ 583: Black Diamond Wired Hexentric; #5

Made in USA [ca. 2016].
Size: 23x25x31 mm.
Weight: 52 g.
Anodized, stamped with new logo.
Anodized 7075 Aluminum alloy.
Small upper face stamped with Black Diamond's cut diamond logo and "5".

↑ 584: Black Diamond Wired Hexentric; #6

Made in USA [ca. 2016].
Size: 27x29x37 mm.
Weight: 62 g.
Anodized, stamped with new logo.
Anodized 7075 Aluminum alloy.
Small upper face stamped with Black Diamond's cut diamond logo and "6.".

↑ 585: Black Diamond Wired Hexentric; #7

Made in USA [ca. 2016].
Size: 33x35x45 mm.
Weight: 85 g.
Anodized, stamped with new logo.
Anodized 7075 Aluminum alloy.
Small upper face stamped with Black Diamond's cut diamond logo and "7.".

Anodized, Not Stamped

↑ 688: Black Diamond Wired Hexentric; #3

Made in USA.
Size: 16x17x24 mm.
Weight: 28 g.
Anodized 7075 Aluminum alloy.
No markings on hex.

↑ 689: Black Diamond Wired Hexentric; #10

Made in USA.
Size: 55x59x73 mm.
Weight: 153 g.
Anodized 7075 Aluminum alloy.
No markings on hex.

Hexentrics

↑ Set 060-062: Black Diamond Hexentrics

Made in USA [1990s].
#4, #7, #8
For 5.5 mm. sling.

↑ 060: Black Diamond Hexentric; #4

Made in USA [1990s].
Size: 20x21.5x29 mm.
Dual-tapered ends.
7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the Black Diamond BD〈C〉USA logo, and "4.".

↑ 061: Black Diamond Hexentric; #7

Made in USA [1990s].
Size: 32.5x35x47.5 mm.
Weight: 153 g.
Dual-tapered ends.
7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the Black Diamond BD〈C〉USA logo, and "7.".

↑ 062: Black Diamond Hexentric; #8

Made in USA [1990s].
Size: 39x42x55 mm.
Weight: 59 g.
Dual-tapered ends.
7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the Black Diamond BD〈C〉USA logo, and "8.".

↑ 320: Black Diamond Hexentric; #9

Made in USA [1990s].
Size: 46x50x65 mm.
Weight: 92 g.
Dual-tapered ends.
7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the Black Diamond BD〈C〉USA logo, and "9.".

↑ 321: Black Diamond Hexentric; #10

Made in USA [1990s].
Size: 54x59x77 mm.
Weight: 118 g.
Dual-tapered ends.
7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the Black Diamond BD〈C〉USA logo, and "10.".

↑ 322: Black Diamond Hexentric; #11

Made in USA [1990s].
Size: 65x70x88 mm.
Dual-tapered ends.
7075 Aluminum alloy.
Small upper face is stamped with "HEXENTRIC," the Black Diamond BD〈C〉USA logo, and "11.".

General Notes

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Black Diamond Nuts

Copper/Steel Nuts

Wired Stoppers

Not Anodized, Stamped With Old Logo

Anodized, Stamped With New Logo

Wired Hexentrics

Not Anodized, Stamped With Old Logo

Anodized, Stamped With Old Logo

Anodized, Stamped With New Logo

Anodized, Not Stamped

Hexentrics

Black Diamond
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