The Pin-Rivet, cataloged under National Stock Number 5320-01-166-3668, 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 14 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-166-3668 |
| Primary Part Number | HLT312TA-8-19 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP AND SOLID FILM |
| Head Height | 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Fastener Length | 1.573 INCHES MINIMUM AND 1.593 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | TI-SHIELD III FSCM 73197 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Grip Length | 1.193 INCHES MAXIMUM IN |
| Width Between Flats | 0.0947 INCHES MINIMUM AND 0.0967 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | ANODIZE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Shear Strength | 95000 SINGLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.415 INCHES MINIMUM AND 0.440 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 |
|---|---|
| HLT312DL-8-19 | Hi-Shear Corporation (USA) |
| ST3M761V4-19 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT312DL-8-19 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT312DL-8-19 | West Coast Aerospace, Inc. (USA) |
| ST3M761V4-19 | Hi-Shear Corporation (USA) |
| HLT312TB-8-19 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT312TB-8-19 | Hi-Shear Corporation (USA) |
| HLT312TA-8-19 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M761V4-19 | West Coast Aerospace, Inc. (USA) |
| HLT312TB-8-19 | West Coast Aerospace, Inc. (USA) |
| ST3M761V4-19 | The Boeing Company Div Defense (USA) |
| HLT312DL-8-19 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT312TB-8-19 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT312TA-8-19 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 10111948 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| HLT312TA-8-19 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| HLT312DL-8-19 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| HLT312DL-8-19 | 5/2 Secondary reference U.S. Government activity |
| HLT312TB-8-19 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| HLT312TB-8-19 | 5/2 Secondary reference U.S. Government activity |
| ST3M761V4-19 | 5/2 Secondary reference U.S. Government activity |
| HLT312TB-8-19 | 5/9 Secondary reference U.S. Government activity |
| AIC-L-761V4-19 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HLT312DL-8-19 | 5/9 Secondary reference U.S. Government activity |
| HLT312TA-8-19 | 5/2 Secondary reference U.S. Government activity |
| HLT312TA-8-19 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-01-166-3668 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-166-3668 has 14 manufacturer part numbers on file: HLT312DL-8-19 (Hi-Shear Corporation), ST3M761V4-19 (Sps Technologies, Llc Dba PB Fasteners), HLT312DL-8-19 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HLT312DL-8-19 (West Coast Aerospace, Inc.), ST3M761V4-19 (Hi-Shear Corporation) and 9 more.
Key specifications for HLT312TA-8-19: Shank Diameter: 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP AND SOLID FILM; Head Height: 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN; Fastener Length: 1.573 INCHES MINIMUM AND 1.593 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.