The Pin,spring, cataloged under National Stock Number 5315-01-652-3731, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Williams International Co., L.l.c.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-652-3731 |
| Primary Part Number | 29057 |
| Item Name | Pin,spring |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Williams International Co., L.l.c. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 29057 PRIMARY | Williams International Co., L.l.c. (USA) |
| Reference | Meaning |
|---|---|
| MS51987-398 | 3/2 Design control — primary reference U.S. Government activity |
| NASM51987 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5315-01-652-3731 is a Pin,spring, manufactured by Williams International Co., L.l.c., classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-652-3731 has 1 manufacturer part number on file: 29057 (Williams International Co., L.l.c.).
1 possible match (shared part number, not a government interchangeability claim): 5315-01-652-3931. Verify interchangeability with system specifications before substitution.
Key specifications for 29057: Special Features: HOLE QUANITY-3; PLAIN MOUNTING HOLE TYPE; STYLE - ANGLE; Part Name Assigned by Controlling Agency: BRACKET, AIR START TUBE; End Item Identification: STATOR ASSEMBLIE. 0 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.