The Pin,straight,headed, cataloged under National Stock Number 5315-00-003-5401, 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 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-00-003-5401 |
| Primary Part Number | A51B51538-11 |
| Item Name | Pin,straight,headed |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Head Inside Diameter | 0.313 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN |
| Surface Finish | 16.0 MICROINCHES OUTSIDE DIAMETER |
| Chamfer Length | 0.060 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 TY2 CL1 FED SPEC 1ST TREATMENT RESPONSE AND QQ-P-416 TY2 CL1 FED SPEC 2ND TREATMENT RESPONSE OR A-2404 ASSN STD 3RD TREATMENT RESPONSE OVERALL |
| Under Head Length | 2.104 INCHES NOMINAL IN |
| Tee Bolt Cylindrical Head Diameter | 0.625 INCHES NOMINAL IN |
| Pin Chamfer Angle | 45.0 DEGREES NOMINAL |
| Style Designator | STRAIGHT |
| Material Document and Classification | MIL-S-8844 CL 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.5303 INCHES MINIMUM AND 0.5318 INCHES MAXIMUM IN |
| Head Style | TEE NO. 4 |
| Head Length | 1.156 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE OR NICKEL OVERALL |
| Material | STEEL COMP 4340 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 |
|---|---|
| A51B51538-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51B51538-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation |
| A51B51538-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 5315-00-003-5401 is a Pin,straight,headed, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-00-003-5401 has 1 manufacturer part number on file: A51B51538-11 (Northrop Grumman Systems Corporation).
Key specifications for A51B51538-11: Head Inside Diameter: 0.313 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN; Surface Finish: 16.0 MICROINCHES OUTSIDE DIAMETER; Chamfer Length: 0.060 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 TY2 CL1 FED SPEC 1ST TREATMENT RESPONSE AND QQ-P-416 TY2 CL1 FED SPEC 2ND TREATMENT RESPONSE OR A-2404 ASSN STD 3RD TREATMENT RESPONSE OVERALL. 14 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.