Eiger
Nuts

Mike Sturm created Eiger Mountain Sports Corp. in the early 1960s. He sourced pitons from Switzerland, and had Stanley Brozek of S.B.C.I. produce carabiners for him. Eiger closed in the early 1970s. After closing Eiger, Mike Sturm built a similar company, Liberty Mountain, and sold climbing gear under that name. Around 1992, Liberty Mountain created the brand Advanced Base Camp for its climbing gear. Advanced Base Camp was reborn as Cypher in 2003.

Wired Hexagons

These are similar to some of my SMC Wired Tru-Hexes.
I do not like the large lower loop. It makes racking these nuts more difficult.

Set 458-460, 785, 154, 732-733: Eiger Wired Hexagons; #1–#4, #6–10

Set 458-460, 785, 154, 732-733: Eiger Wired Hexagons; #1–#4, #6–10

↑ Set 458-460, 785, 154, 732-733: Eiger Wired Hexagons; #1–#4, #6–10

Made in USA [ca. 1970].
Although wired, the cable passes through holes sized for accessory cord.

458: Eiger Wired Hexagon; #1

458: Eiger Wired Hexagon; #1

458: Eiger Wired Hexagon; #1

458: Eiger Wired Hexagon; #1

↑ 458: Eiger Wired Hexagon; #1

Made in USA [ca. 1970].
Size: 9x25 mm.
Weight: 39 g.
Holes in nut are sized for 5 mm. accessory cord.
Aluminum alloy hex on 3.2 mm. Steel cable with copper crimp.
Stamped "EIGER" and "1" on one lower face.

459: Eiger Wired Hexagon; #2

459: Eiger Wired Hexagon; #2

459: Eiger Wired Hexagon; #2

459: Eiger Wired Hexagon; #2

↑ 459: Eiger Wired Hexagon; #2

Made in USA [ca. 1970].
Size: 12x31 mm.
Weight: 43 g.
Holes in nut are sized for 7 mm. accessory cord.
Aluminum alloy hex on 3.2 mm. Steel cable with copper crimp.
Stamped "EIGER" and "2" on one lower face.

460: Eiger Wired Hexagon; #3

460: Eiger Wired Hexagon; #3

460: Eiger Wired Hexagon; #3

460: Eiger Wired Hexagon; #3

↑ 460: Eiger Wired Hexagon; #3

Made in USA [ca. 1970].
Size: 15x34 mm.
Weight: 69 g.
Holes in nut are sized for 8 mm. accessory cord.
Aluminum alloy hex on 4.0 mm. Steel cable with copper crimp.
Stamped "EIGER" and "3" on one lower face.

785: Eiger Wired Hexagon; #3

785: Eiger Wired Hexagon; #3

785: Eiger Wired Hexagon; #3

785: Eiger Wired Hexagon; #3

↑ 785: Eiger Wired Hexagon; #3

Made in USA [ca. 1970].
Size: 15x34 mm.
Weight: 72 g.
Holes in nut are sized for 9 mm. accessory cord.
Heavier cable than #460.
Aluminum alloy hex on 4.2 mm. Steel cable with copper crimp.
Stamped "EIGER" and "3" on one lower face.

154: Eiger Wired Hexagon; #4

154: Eiger Wired Hexagon; #4

154: Eiger Wired Hexagon; #4

154: Eiger Wired Hexagon; #4

↑ 154: Eiger Wired Hexagon; #4

Made in USA [ca. 1970].
Size: 19x38 mm.
Weight: 84 g.
Holes in nut are sized for 9 mm. accessory cord.
Aluminum alloy hex on 4.1 mm. steel cable with copper crimp.
Stamped "EIGER" and "4" on one lower face.

732: Eiger Wired Hexagon; #6

732: Eiger Wired Hexagon; #6

732: Eiger Wired Hexagon; #6

732: Eiger Wired Hexagon; #6

↑ 732: Eiger Wired Hexagon; #6

Made in USA [ca. 1970].
Size: 32x51 mm.
Weight: 143 g.
Holes in nut are sized for 11 mm. accessory cord.
Aluminum alloy hex on 4.25 mm. Steel cable with copper crimp.
Stamped "EIGER" and "5" on one lower face.
From Mike Gerbman, 2025.

733: Eiger Wired Hexagon; #7

733: Eiger Wired Hexagon; #7

733: Eiger Wired Hexagon; #7

733: Eiger Wired Hexagon; #7

↑ 733: Eiger Wired Hexagon; #7

Made in USA [ca. 1970].
Size: 38x58 mm.
Weight: 175 g.
Holes in nut are sized for 12.5 mm. accessory cord.
Aluminum alloy hex on 4.25 mm. Steel cable with copper crimp.
Stamped "EIGER" and "6" on one lower face.
From Mike Gerbman, 2025.

Hexagons

First Generation

The first generation Eiger Hexagons were made from standard hexagonal bar stock. Their cross sections are regular hexagons. The larger ones were drilled longitudinally to reduce weight.

Set 370, 704, 371, 705, 107, 706-707: Eiger Hexagons; #1–#7

Set 370, 704, 371, 705, 107, 706-707: Eiger Hexagons; #1–#7

↑ Set 370, 704, 371, 705, 107, 706-707: Eiger Hexagons; #1–#7

Made in USA [ca. 1970].
Regular hexagonal cross–section.
Aluminum alloy.

370: Eiger Hexagon; #1

370: Eiger Hexagon; #1

370: Eiger Hexagon; #1

370: Eiger Hexagon; #1

↑ 370: Eiger Hexagon; #1

Made in USA [ca. 1970].
Size: 9.5x25 mm.
Regular hexagonal cross–section.
Aluminum alloy.
Stamped with "EIGER" and "1" on one lower face.

704: Eiger Hexagon; #2

704: Eiger Hexagon; #2

704: Eiger Hexagon; #2

704: Eiger Hexagon; #2

↑ 704: Eiger Hexagon; #2

Made in USA [ca. 1970].
Size: 12x31 mm.
Regular hexagonal cross–section.
Aluminum alloy.
Stamped with "EIGER" and "2" on one lower face.

371: Eiger Hexagon; #3

371: Eiger Hexagon; #3

371: Eiger Hexagon; #3

371: Eiger Hexagon; #3

↑ 371: Eiger Hexagon; #3

Made in USA [ca. 1970].
Size: 16x34 mm.
Regular hexagonal cross–section.
Aluminum alloy.
Stamped with "EIGER" and "3" on one lower face.

705: Eiger Hexagon; #4

705: Eiger Hexagon; #4

705: Eiger Hexagon; #4

705: Eiger Hexagon; #4

↑ 705: Eiger Hexagon; #4

Made in USA [ca. 1970].
Size: 19x38 mm.
Regular hexagonal cross–section.
Aluminum alloy.
Stamped with "EIGER" and "4" on one lower face.

107: Eiger Hexagon; #5

107: Eiger Hexagon; #5

107: Eiger Hexagon; #5

107: Eiger Hexagon; #5

↑ 107: Eiger Hexagon; #5

Made in USA [ca. 1970].
Size: 24x44 mm.
Weight: 44 g.
Regular hexagonal cross–section.
Aluminum alloy.
Stamped with "EIGER" and "5" on one lower face.

706: Eiger Hexagon; #6

706: Eiger Hexagon; #6

706: Eiger Hexagon; #6

706: Eiger Hexagon; #6

↑ 706: Eiger Hexagon; #6

Made in USA [ca. 1970].
Size: 32x51 mm.
Regular hexagonal cross–section.
Aluminum alloy.
Stamped with "EIGER" and "6" on one lower face.

707: Eiger Hexagon; #7

707: Eiger Hexagon; #7

707: Eiger Hexagon; #7

707: Eiger Hexagon; #7

↑ 707: Eiger Hexagon; #7

Made in USA [ca. 1970].
Size: 38x58 mm.
Regular hexagonal cross–section.
Aluminum alloy.
Stamped with "EIGER" and "7" on one lower face.

Second Generation

The second generation Eiger Hexagons were made from aluminum extrusions. They have a symmetric front-to-rear cross-section similar to the first Chouinard Hexentrics.

Set 372-375: Eiger Hexagons; #7–#10

Set 372-375: Eiger Hexagons; #7–#10

↑ Set 372-375: Eiger Hexagons; #7–#10

Made in USA [1970s].
Symmetric hexagonal cross section.
Aluminum alloy.

372: Eiger Hexagon; #7

372: Eiger Hexagon; #7

372: Eiger Hexagon; #7

372: Eiger Hexagon; #7

↑ 372: Eiger Hexagon; #7

Made in USA [1970s].
Size: 31x43 mm.
Symmetric hexagonal cross section.
Aluminum alloy.
Stamped with "EIGER" and "7" on one upper face.

373: Eiger Hexagon; #8

373: Eiger Hexagon; #8

373: Eiger Hexagon; #8

373: Eiger Hexagon; #8

↑ 373: Eiger Hexagon; #8

Made in USA [1970s].
Size: 39x55 mm.
Symmetric hexagonal cross section.
Aluminum alloy.
Stamped with "EIGER" and "8" on one upper face.

374: Eiger Hexagon; #9

374: Eiger Hexagon; #9

374: Eiger Hexagon; #9

374: Eiger Hexagon; #9

↑ 374: Eiger Hexagon; #9

Made in USA [1970s].
Size: 49x69 mm.
Symmetric hexagonal cross section.
Aluminum alloy.
Stamped with "EIGER" and "9" on one upper face.

375: Eiger Hexagon; #10

375: Eiger Hexagon; #10

375: Eiger Hexagon; #10

375: Eiger Hexagon; #10

↑ 375: Eiger Hexagon; #10

Made in USA [1970s].
Size: 60x84 mm.
Symmetric hexagonal cross section.
Aluminum alloy.
Stamped with "EIGER" and "10" on one upper face.