The Pin,shoulder,headless, cataloged under National Stock Number 5315-01-239-5997, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 19 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 | 5315-01-239-5997 |
| Primary Part Number | 70700-77520-109 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Shank Diameter | 0.297 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN |
| First End Taper Length | 0.060 INCHES MAXIMUM IN |
| First End Location | BOTH ENDS |
| Surface Treatment Document and Classification | QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.750 INCHES NOMINAL IN |
| First End Style | CHAMFERED |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Length | 2.820 INCHES NOMINAL IN |
| Style Designator | SHOULDER |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| First End Taper Angle | 40.0 DEGREES MINIMUM AND 50.0 DEGREES MAXIMUM |
| Second End Relationship with First End | IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Shoulder Diameter | 0.371 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 3A A |
| Material | STEEL COMP E4340 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 70700-77520-109 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5315-01-239-5997 is a Pin,shoulder,headless, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-239-5997 has 1 manufacturer part number on file: 70700-77520-109 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 70700-77520-109: Shank Diameter: 0.297 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN; First End Taper Length: 0.060 INCHES MAXIMUM IN; First End Location: BOTH ENDS; Surface Treatment Document and Classification: QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 19 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.