The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-243-9571, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-243-9571 |
| Primary Part Number | 12321941 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Shank Diameter | 0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| First End Taper Length | 0.058 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN |
| First End Location | THREADED END |
| Thread Length | 0.510 INCHES NOMINAL IN |
| First End Style | CHAMFERED |
| Hardness Rating | 31.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Length | 0.630 INCHES NOMINAL IN |
| Style Designator | SHOULDER |
| Material Document and Classification | ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Shoulder Diameter | 0.740 INCHES MINIMUM AND 0.745 INCHES MAXIMUM IN |
| Second End Outer Radius | 0.370 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN |
| Second End Style | OVAL |
| Thread Class | 2A A |
| Material | STEEL COMP 4140 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12321941 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5315-01-243-9571 is a Pin,shoulder,headless, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-243-9571 has 1 manufacturer part number on file: 12321941 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12321941: Shank Diameter: 0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN; First End Taper Length: 0.058 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN; First End Location: THREADED END; Thread Length: 0.510 INCHES NOMINAL IN. 18 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.