The Pin-Rivet, cataloged under National Stock Number 5320-01-685-9975, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-685-9975 |
| Primary Part Number | HL851LL-8-23 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.2797 INCHES MINIMUM AND 0.2807 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Head Height | 0.0590 INCHES MINIMUM AND 0.0610 INCHES MAXIMUM IN |
| Fastener Length | 1.8225 INCHES MINIMUM AND 1.8425 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | HI-SHEAR 258 COMMERCIAL ITEM DESCRIPTION SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Grip Length | 1.4325 INCHES MINIMUM AND 1.4425 INCHES MAXIMUM IN |
| Width Between Flats | 0.122 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Shear Strength | 15500 DOUBLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.4210 INCHES MINIMUM AND 0.4360 INCHES MAXIMUM 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 |
|---|---|
| HL851LL-8-23 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HL851 | D/9 Drawing number reference only Hi-Shear Corporation |
NSN 5320-01-685-9975 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-685-9975 has 1 manufacturer part number on file: HL851LL-8-23 (Hi-Shear Corporation).
3 possible matches (shared part number, not a government interchangeability claim): 5320-01-692-6863, 5320-01-693-7200, 5320-01-694-8743. Verify interchangeability with system specifications before substitution.
Key specifications for HL851LL-8-23: Shank Diameter: 0.2797 INCHES MINIMUM AND 0.2807 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Head Height: 0.0590 INCHES MINIMUM AND 0.0610 INCHES MAXIMUM IN; Fastener Length: 1.8225 INCHES MINIMUM AND 1.8425 INCHES MAXIMUM IN. 20 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.