The Pin-Rivet, cataloged under National Stock Number 5320-01-628-9316, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is West Coast Aerospace, Inc.. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-628-9316 |
| Primary Part Number | HLT51YC-8-15 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | West Coast Aerospace, Inc. |
| Status | ACTIVE |
| Shank Diameter | 0.250 INCHES NOMINAL IN |
| Lubrication | DRY FILM AND SOLID FILM |
| Fastener Length | 1.3325 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS 2700 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Criticality Code Justification | AGAV |
| Material Document and Classification | A,S 5629 PH13-8MO ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Grip Length | 0.9375 INCHES NOMINAL IN |
| Width Between Flats | 0.0947 INCHES MINIMUM AND 0.0967 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| 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 | 0.3898 INCHES MINIMUM AND 0.3948 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 | Y |
| Part Number | Manufacturer |
|---|---|
| HLT51YC-8-15 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HLT51YC-8-15 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M758C4-15 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HLT51YC-8-15 PRIMARY | Hi-Shear Corporation (USA) |
| HP4758-4-15 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| HLT51YC-8-15 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| ST3M758C4-15 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HLT51YC-8-15 | 3/2 Design control — primary reference U.S. Government activity |
| HLT51YC-8-15 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5320-01-628-9316 is a Pin-Rivet, manufactured by West Coast Aerospace, Inc., classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-628-9316 has 6 manufacturer part numbers on file: HLT51YC-8-15 (West Coast Aerospace, Inc.), HLT51YC-8-15 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), ST3M758C4-15 (Fastener Innovation Technology, Inc. Dba F I T), HLT51YC-8-15 (Hi-Shear Corporation), HP4758-4-15 (Heartland Precision Fasteners Inc) and 1 more.
Key specifications for HLT51YC-8-15: Shank Diameter: 0.250 INCHES NOMINAL IN; Lubrication: DRY FILM AND SOLID FILM; Fastener Length: 1.3325 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS 2700 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 19 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.