pins › threaded tapered pins
AN386-3-12A
Taper Pin
Description
Manufactured from alloy steel, minimum tensile strength 125,000 PSI. Cadmium plated. Taper: 0.500"/ft. Use with AN975 taper pin washer, AN320 shear castle nut and cotter pin or with AN364 elastic stop nut. When installed, the small end of the tapered shank should protrude no more than 1/16" above the surface of the assembly. The first dash number is the Brown & Sharpe taper pin reamer number and the second dash number is the grip length in eighths of an inch. For undrilled threaded shank add the letter "A" after second dash number. To order taper reamers, please
Specifications
| First End Style | Square |
|---|---|
| Grip Length | Between 1.484 inches and 1.516 inches |
| Material | Steel |
| Material Specification | Qq-s-681 federal specification 1st material response or mil-s-6049 military specification 2nd material response or mil-s-6050 military specification 3rd material response or mil-s-6098 military specification 4th material response or mil-s-6758 military specification 5th material response |
| Second End Relationship With First End | Not identical |
| Style Designator | Threaded at small end |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Cl 3 federal specification single treatment response type 1 qq-p-416 |
| Thread Class | 3a |
| Thread Direction | Right-hand |
| Thread Length | Between 0.438 inches and 0.469 inches |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 0.250 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- AN386-3-12 AN 1/4 in · Steel
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Catalog data updated 2026-07-05. Report a data error