The Pin,shoulder,headless, cataloged under National Stock Number 5315-00-949-9074, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5315-00-949-9074 |
| Primary Part Number | 123BM40383-1 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN |
| Second Shank Diameter | 0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN |
| First End Taper Length | 0.045 INCHES NOMINAL IN |
| First End Location | SHORT SHANK END |
| Second End Taper Angle | 30.0 DEGREES NOMINAL |
| Thread Length | 1.391 INCHES NOMINAL IN |
| First End Style | CHAMFERED |
| Hardness Rating | 41.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Length | 1.078 INCHES NOMINAL IN |
| Style Designator | SHOULDER |
| Material Document and Classification | MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Second End Taper Length | 0.125 INCHES NOMINAL IN |
| First End Taper Angle | 45.0 DEGREES NOMINAL |
| Second End Relationship with First End | NOT IDENTICAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Shoulder Diameter | 0.688 INCHES NOMINAL IN |
| Second Shank Length | 1.391 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Second End Style | CHAMFERED |
| Thread Class | 3A A |
| Material | STEEL COMP 431 OVERALL |
| Thread Series Designator | UNEF |
| 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 |
|---|---|
| 123BM40383-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 123BM40383-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5315-00-949-9074 is a Pin,shoulder,headless, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-00-949-9074 has 1 manufacturer part number on file: 123BM40383-1 (Northrop Grumman Systems Corporation).
Key specifications for 123BM40383-1: Shank Diameter: 0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN; Second Shank Diameter: 0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN; First End Taper Length: 0.045 INCHES NOMINAL IN; First End Location: SHORT SHANK END. 23 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.