The Pin,straight,headed, cataloged under National Stock Number 5315-00-003-3922, 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 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5315-00-003-3922 |
| Primary Part Number | A51M20551-19 |
| Item Name | Pin,straight,headed |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES OUTSIDE DIAMETER |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hole Arrangement Style | ONE END DRILLED |
| Under Head Length | 0.489 INCHES NOMINAL IN |
| First Hole Diameter | 0.042 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | STRAIGHT |
| Pin Head Diameter | 0.188 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5643 FSCM 81343 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.123 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN |
| Head Style | PAN NO. 2 (R1 NOT REQUIRED IN ITEM DESCRIPTION) |
| Height | 0.047 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Test Data Document | 81349-MIL-I-6868 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | STEEL COMP 630 OVERALL |
| Distance From Centerline of Hole to End of Pin | 0.074 INCHES NOMINAL IN |
| 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 |
|---|---|
| A51M20551-19 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51M20551-19 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51M20551-19 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation |
NSN 5315-00-003-3922 is a Pin,straight,headed, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-00-003-3922 has 1 manufacturer part number on file: A51M20551-19 (Northrop Grumman Systems Corporation).
Key specifications for A51M20551-19: Surface Finish: 32.0 MICROINCHES OUTSIDE DIAMETER; Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Hole Arrangement Style: ONE END DRILLED; Under Head Length: 0.489 INCHES NOMINAL IN. 16 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.