The Pin,shoulder,headless, cataloged under National Stock Number 5315-00-494-7644, 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 22 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5315-00-494-7644 |
| Primary Part Number | 8-10666-1 |
| Item Name | Pin,shoulder,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Second Shank Diameter | 0.250 INCHES NOMINAL IN |
| Surface Finish | 125.000 MICROINCHES OVERALL |
| First End Taper Length | 0.030 INCHES NOMINAL IN |
| First End Location | LONG END |
| Second End Taper Angle | 60.0 DEGREES NOMINAL |
| Thread Length | 0.450 INCHES NOMINAL IN |
| First End Style | CHAMFERED |
| Shank Length | 0.450 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN |
| Style Designator | SHOULDER |
| Material Document and Classification | MIL-S-5626 COND C4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Second End Taper Length | 0.185 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 | 0.250 INCHES IN |
| Second Shank Length | 0.780 INCHES NOMINAL IN |
| Shoulder Width Across Flats | 0.438 INCHES NOMINAL IN |
| Second End Style | POINTED |
| Thread Class | 3A A |
| Material | STEEL COMP 4140 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 8-10666-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 8-10666-1 | 5/9 Secondary reference Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 8-10666-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
NSN 5315-00-494-7644 is a Pin,shoulder,headless, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-00-494-7644 has 1 manufacturer part number on file: 8-10666-1 (Northrop Grumman Systems Corporation).
Key specifications for 8-10666-1: Shank Diameter: 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN; Second Shank Diameter: 0.250 INCHES NOMINAL IN; Surface Finish: 125.000 MICROINCHES OVERALL; First End Taper Length: 0.030 INCHES NOMINAL IN. 22 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.