The Pin-Rivet, cataloged under National Stock Number 5320-01-231-3331, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 23 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-231-3331 |
| Primary Part Number | ST3M758C6-6 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Shank Diameter | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Lubrication | SOLID FILM AND CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Fastener Length | 0.910 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | CROWN COUTERSUNK GREATER THAN 135 DEGREES |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.3750 INCHES IN |
| Grip Length | 0.380 INCHES MAXIMUM IN |
| Width Between Flats | 0.1582 INCHES MINIMUM AND 0.1617 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Shear Strength | 125000 SINGLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.5554 INCHES MINIMUM AND 0.5604 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 |
|---|---|
| ST3M758C6-6 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M758C6-6 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M758C6-6 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M758C6-6 PRIMARY | Huck International, Inc (USA) |
| ST3M758C6-6 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HLT51YB-12-6 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| ST3M758C6-6 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M758C6-6 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| HLT51YB-12-6 | 5/9 Secondary reference Af Aerospace Ltd |
| HLT51YB-12-6 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| HLT51YC-12-6 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| ST3M758C6-6 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HLT51YC-12-6 | 5/9 Secondary reference U.S. Government activity |
| HLT51YC-12-6 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| HLT51YB-12-6 | 5/9 Secondary reference Huck International, Inc |
| HLT51YC-12-6 | 5/9 Secondary reference U.S. Government activity |
| HLT51YC-12-6 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HLT51YC-12-6 | 5/9 Secondary reference Huck International, Inc |
| MA4758-6-6 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| 10112231 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| AIC-L-758C6-6 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HLT51YB-12-6 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HLT51YC-12-6 | 5/9 Secondary reference Hi-Shear Corporation |
| HP4758-6-6 | 5/9 Secondary reference Heartland Precision Fasteners Inc |
| HLT51YB-12-6 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| HLT51YC-12-6 | 5/9 Secondary reference Sps Technologies Ltd, Tj Brooks Division |
| HLT51YC-12-6 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| HLT51YB-12-6 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-01-231-3331 is a Pin-Rivet, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-231-3331 has 8 manufacturer part numbers on file: ST3M758C6-6 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M758C6-6 (Sps Technologies, Llc Dba PB Fasteners), ST3M758C6-6 (Hi-Shear Corporation), ST3M758C6-6 (Huck International, Inc), ST3M758C6-6 (West Coast Aerospace, Inc.) and 3 more.
Key specifications for ST3M758C6-6: Shank Diameter: 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN; Lubrication: SOLID FILM AND CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Fastener Length: 0.910 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN; Material Document and Classification: AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.