The Pin-Rivet, cataloged under National Stock Number 5320-01-667-5776, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-667-5776 |
| Primary Part Number | HLT733DL-8-6 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Shank Diameter | 0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM IN |
| Lubrication | SOLID FILM OR CETYL ALCOHOL AND DRY FILM |
| Head Height | 0.0993 INCHES MINIMUM AND 0.1013 INCHES MAXIMUM IN |
| Fastener Length | 0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2700,METHOD 1 OR 2 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 5629 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.2500 INCHES IN |
| Specification/standard Data | 76301-ST3-813 MANUFACTURERS STANDARD |
| Grip Length | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Width Between Flats | 0.0947 INCHES MINIMUM AND 0.0967 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.470 INCHES MINIMUM AND 0.477 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 | 0.5018 INCHES MINIMUM AND 0.5066 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 |
|---|---|
| HLT733DL-8-6 PRIMARY | Huck International, Inc (USA) |
| ST3M813D4-6 | The Boeing Company Div Defense (USA) |
| HLT733DL-8-6 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M813D4-6 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HLT733TB-8-6 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT733DL-8-6 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M813D4-6 PRIMARY | Houston Precision Fasteners I Lp (USA) |
| HP4813D4-6 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| HLT733DL-8-6 PRIMARY | West Coast Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| HLT733TB-8-6 | 3/2 Design control — primary reference U.S. Government activity |
| HLT733TB-8-6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5320-01-667-5776 is a Pin-Rivet, manufactured by Huck International, Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-667-5776 has 9 manufacturer part numbers on file: HLT733DL-8-6 (Huck International, Inc), ST3M813D4-6 (The Boeing Company Div Defense), HLT733DL-8-6 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), ST3M813D4-6 (Fastener Innovation Technology, Inc. Dba F I T), HLT733TB-8-6 (Sps Technologies, Llc Dba PB Fasteners) and 4 more.
Key specifications for HLT733DL-8-6: Shank Diameter: 0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM IN; Lubrication: SOLID FILM OR CETYL ALCOHOL AND DRY FILM; Head Height: 0.0993 INCHES MINIMUM AND 0.1013 INCHES MAXIMUM IN; Fastener Length: 0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN. 21 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.