The Pin,grooved,headless, cataloged under National Stock Number 5315-01-705-8817, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Charles Reed Knight Jr Dba Knight's Armament Company. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-01-705-8817 |
| Primary Part Number | 21133 |
| Item Name | Pin,grooved,headless |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Charles Reed Knight Jr Dba Knight's Armament Company |
| Status | ACTIVE |
| 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 |
|---|---|
| 21133 PRIMARY | Charles Reed Knight Jr Dba Knight's Armament Company (USA) |
NSN 5315-01-705-8817 is a Pin,grooved,headless, manufactured by Charles Reed Knight Jr Dba Knight's Armament Company, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-705-8817 has 1 manufacturer part number on file: 21133 (Charles Reed Knight Jr Dba Knight's Armament Company).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-708-4032. Verify interchangeability with system specifications before substitution.
Key specifications for 21133: Special Features: NHA-UPPER RECEIVER ASSEMBLY, KS1, SR-16; Part Name Assigned by Controlling Agency: PIN, EJECTION PORT COVER. 0 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.