The Pin,grooved,headed, cataloged under National Stock Number 5315-01-661-9978, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-661-9978 |
| Item Name | Pin,grooved,headed |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Status | ACTIVE |
| Undercut Width | 0.250 INCHES NOMINAL IN |
| First End Taper Length | 0.170 INCHES NOMINAL IN |
| Undercut Diameter | 0.283 INCHES NOMINAL IN |
| Under Head Length | 2.75 INCHES NOMINAL IN |
| First End Style | CHAMFERED |
| Style Designator | GROOVE |
| Pin Head Diameter | 1.0 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5604 NATIONAL SPEC SINGLE MATERIAL RESPONSE OR AMS 5643 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.373 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN |
| Effective Length | 1.76 INCHES NOMINAL IN |
| Head Style | KNURLED NO. 2 |
| Second Undercut Width | 0.250 INCHES NOMINAL IN |
| Height | 0.51 INCHES NOMINAL IN |
| Second Undercut Diameter | 0.283 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MA520001-96 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5315-01-661-9978 is a Pin,grooved,headed, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
Key specifications for 5315-01-661-9978: Undercut Width: 0.250 INCHES NOMINAL IN; First End Taper Length: 0.170 INCHES NOMINAL IN; Undercut Diameter: 0.283 INCHES NOMINAL IN; Under Head Length: 2.75 INCHES NOMINAL IN. 15 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.