The Pin,spring, cataloged under National Stock Number 5315-00-421-4959, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Esna, Llc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-00-421-4959 |
| Primary Part Number | 99-040-187-1375 |
| Item Name | Pin,spring |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | SLOTTED |
| Material Document and Classification | ASTM B194-51 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.194 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN |
| Material Thickness | 0.040 INCHES NOMINAL IN |
| Material | COPPER ALLOY 170 OR COPPER ALLOY 172 OVERALL |
| 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 |
|---|---|
| 99-040-187-1375 PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| 99-040-187-1375 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5315-00-421-4959 is a Pin,spring, manufactured by Esna, Llc, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-00-421-4959 has 1 manufacturer part number on file: 99-040-187-1375 (Esna, Llc).
Key specifications for 99-040-187-1375: Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL; Style Designator: SLOTTED; Material Document and Classification: ASTM B194-51 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Diameter: 0.194 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN. 6 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.