The Pin,spring, cataloged under National Stock Number 5315-00-958-9975, 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 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-00-958-9975 |
| Primary Part Number | 59-077-375-4000 |
| Item Name | Pin,spring |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | SLOTTED |
| Material Document and Classification | AMS 5120 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5121 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Diameter | 0.375 INCHES NOMINAL IN |
| Material Thickness | 0.077 INCHES NOMINAL IN |
| Shear Strength | 176000 DOUBLE POUND |
| Material | STEEL COMP 1074 OR STEEL COMP 1095 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 |
|---|---|
| 138-186 | Cnh Industrial America Llc Dba Cnh America (USA) |
| 59-077-375-4000 PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| 186021 | 5/9 Secondary reference Komatsu American Intl Co |
| 59-077-375-4000 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5315-00-958-9975 is a Pin,spring, manufactured by Esna, Llc, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-00-958-9975 has 2 manufacturer part numbers on file: 138-186 (Cnh Industrial America Llc Dba Cnh America), 59-077-375-4000 (Esna, Llc).
3 possible matches (shared part number, not a government interchangeability claim): 5975-01-009-8152, 6625-01-499-6888, 4520-01-624-4190. Verify interchangeability with system specifications before substitution.
Key specifications for 59-077-375-4000: Hardness Rating: 46.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL; Style Designator: SLOTTED; Material Document and Classification: AMS 5120 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5121 ASSN STD 2ND MATERIAL RESPONSE OVERALL; Diameter: 0.375 INCHES NOMINAL IN. 7 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.