Copperhead Climbing Nuts were originally developed as chocks for clean climbers, which is why I included them here. Nowadays they are primarily used as bashies for aid climbing on harder nail-ups where they are artfully pounded into thin seams to provide marginal bodyweight support. These placements cannot be trusted to hold a fall — they rarely will.
Copperhead data tables in my Forrest Mountaineering Ltd. catalogs from 1974 to 1983 list cable sizes of 3/32", 3/32", 1/8", 5/32" and 3/16" for Copperhead sizes #1 through #5, respectively. I have an earlier (undated) Forrest brochure that listed 1/16" for the #1's cable. That version was much weaker, rated at only 480 lbs (2.1 kN) under ideal laboratory conditions. The #1 (either version) and #2 Copperheads should only be trusted for direct aid.
Forrest discontinued making copperheads long ago, but Fish and others continue making them to support the demand of aid climbers. Original Forrest Copperheads are difficult to find and even more difficult to verify, as there are no distinct features that make specific brand identification practical.
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↑ 414: Forrest Copperhead Climbing Nut
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↑ 326: Forrest Copperhead Climbing Nut
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↑ 333: Forrest Copperhead Climbing Nut
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↑ 412: Forrest Copperhead Climbing Nut
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↑ 413: Forrest Copperhead Climbing Nut
Arrowheads are thin, wedge-shaped, die-formed sleeves mounted on single cables. the first ones were made of zinc-plated copper, while later ones were aluminum. The crimps changed from plated copper to aluminum as well. The 1974 Forrest catalog does not say what the arrowheads were made of, but the 1977 says that they were zinc-plated copper. But there is a problem: the dimensions don’t match the nuts in my collection.
The 1974 catalog gives the top width of the #1 Arrowhead as 0.237 inches and 0.295" (pardon our use of "Freedom Units" 😂 ). My #1 and #2 copper Arrowheads measure 0.237" and 0.291" respectively. This is good agreement with the differences being well withing manufacturing and normal wear tolerances. The #3 is 0.400" in the catalog but I don’t yet have one to compare.
The 1977 catalog gives the top width of the #1 through #3 Arrowheads as 0.265", 0.305" and 0.420" respectively. These are significantly larger than the 1974 dimensions. My #1 through #3 aluminum Arrowheads measure 0.260", 0.306" and 0.421" respectively. This is also good agreement with the 1977 catalog numbers.
My working hypothesis is that Forrest started with zinc-plated copper arrowheads ca. 1974, and changed to aluminum by 1977. They included the new dimensions in the 1977 catalog, but did not update their description to match.
Zinc-plated Copper arrowheads have triple crimps on the loop.
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↑ Set 889-890: Forrest Arrowheads; #1–#2
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↑ 889: Forrest Arrowhead; #1
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↑ 890: Forrest Arrowhead; #2
Arrowheads with a triple crimp on the loop are older than those with a double crimp.
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↑ Set 158, 160: Forrest Arrowheads; #1, #3
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↑ 158: Forrest Arrowhead; #1
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↑ 160: Forrest Arrowhead; #3
Arrowheads with a double crimp on the loop are newer than those with a triple crimp.
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↑ 159: Forrest Arrowhead; #2
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↑ 014: Forrest Plastic Foxhead
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↑ Set 014, 163: Forrest Plastic vs. Aluminum Wired Foxhead
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↑ 015: Forrest Wired Foxhead
Foxheads with a triple crimp on the loop are older than those with a triple crimp.
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↑ 630: Forrest Wired Foxhead
Foxheads with a double crimp on the loop are newer than those with a triple crimp.
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↑ Set 161-163: Forrest Wired Foxheads
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↑ 161: Forrest Wired Foxhead
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↑ 162: Forrest Wired Foxhead
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↑ 163: Forrest Wired Foxhead
Foxheads with a triple crimp on the loop are older than those with a triple crimp.
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↑ Set 164, 632, 165: Forrest Short Wired Foxheads; #1–S, #2–S, #3–S
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↑ 164: Forrest Short Wired Foxhead
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↑ 632: Forrest Short Wired Foxhead
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↑ 165: Forrest Short Wired Foxhead
Foxheads with a double crimp on the loop are newer than those with a triple crimp.
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↑ Set 631, 633: Forrest Short Wired Foxheads; #1–S, #3–S
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↑ 631: Forrest Short Wired Foxhead
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↑ 633: Forrest Short Wired Foxhead
1983 Forrest Mountaineering Catalog
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↑ 670: Forrest P–Nut
1983 Forrest Mountaineering Catalog
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↑ Set 734, 735, 860, 736, 737; 120, 119, 324, 873, 738: Forrest Titons; T1–T5, #6–#10
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↑ 734: Forrest Titon; T1
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↑ 735: Forrest Titon; T2
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↑ 860: Forrest Titon; T3
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↑ 736: Forrest Titon; T4
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↑ 742: Forrest Titon; T4
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↑ 737: Forrest Titon; T5
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↑ 740: Forrest Titon; T5
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↑ 743: Forrest Titon; #6
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↑ 120: Forrest Titon; #6
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↑ 119: Forrest Titon; #7
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↑ 324: Forrest Titon; #8
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↑ 873: Forrest Titon; #9
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↑ 738: Forrest Titon; #10
I am missing the painted size T1.
The 1974 Forrest catalog gives T1-#9 Titon colors but gives #10 as "Alum."
Apparently, Forrest did not offer a color-anodized #10.
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↑ Set 739, 122, 296, 121, 297, 118, 741, 298: Forrest Titons; T2–T5, #6–#9
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↑ 739: Forrest Titon; T2
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↑ 122: Forrest Titon; T3
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↑ 296: Forrest Titon; T4
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↑ 121: Forrest Titon; T5
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↑ 297: Forrest Titon; #6
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↑ 118: Forrest Titon; #7
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↑ 741: Forrest Titon; #8
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↑ 298: Forrest Titon; #9
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↑ Set 109-117: Forrest Drilled Titons; #9–#17 (⇆)
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↑ 109: Forrest Drilled Titon; #9
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↑ 110: Forrest Drilled Titon; #10
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↑ 111: Forrest Drilled Titon; #11
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↑ 112: Forrest Drilled Titon; #12
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↑ 113: Forrest Drilled Titon; #13
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↑ 114: Forrest Drilled Titon; #14
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↑ 115: Forrest Drilled Titon; #15
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↑ 116: Forrest Drilled Titon; #16
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↑ 117: Forrest Drilled Titon; #17