The Pin-Rivet, cataloged under National Stock Number 5320-01-643-3411, 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 17 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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 | 5320-01-643-3411 |
| Primary Part Number | HLT252DL-6-21 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.218 INCHES NOMINAL IN |
| Lubrication | SOLID FILM AND CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Head Height | 0.064 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN |
| Fastener Length | 1.672 INCHES NOMINAL IN |
| Chamfer Length | 0.031 INCHES NOMINAL IN |
| Head Style | STRAIGHT PAN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Grip Length | 1.312 INCHES NOMINAL IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Minimum Tensile Strength | 4350 POUNDS PER SQUARE INCH LBS |
| Shear Strength | 9400 DOUBLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.370 INCHES MINIMUM AND 0.390 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 |
|---|---|
| HLT252DL-6-21 | Huck International, Inc (USA) |
| HLT252DL-6-21 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT252DL-6-21 | West Coast Aerospace, Inc. (USA) |
| HLT252DL-6-21 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT252DL-6-21 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HLT252DL-6-21 | 5/2 Secondary reference U.S. Government activity |
| HLT252 | D/9 Drawing number reference only Hi-Shear Corporation |
NSN 5320-01-643-3411 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-643-3411 has 5 manufacturer part numbers on file: HLT252DL-6-21 (Huck International, Inc), HLT252DL-6-21 (Sps Technologies, Llc Dba PB Fasteners), HLT252DL-6-21 (West Coast Aerospace, Inc.), HLT252DL-6-21 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HLT252DL-6-21 (Hi-Shear Corporation).
8 possible matches (shared part number, not a government interchangeability claim): 5320-01-643-5287, 5320-01-643-5293, 5320-01-643-5360. Verify interchangeability with system specifications before substitution.
Key specifications for HLT252DL-6-21: Shank Diameter: 0.218 INCHES NOMINAL IN; Lubrication: SOLID FILM AND CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Head Height: 0.064 INCHES MINIMUM AND 0.074 INCHES MAXIMUM IN; Fastener Length: 1.672 INCHES NOMINAL IN. 17 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.