The Pin-Rivet, cataloged under National Stock Number 5320-00-288-3258, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 22 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-00-288-3258 |
| Primary Part Number | ST3M758D6-6 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Shank Diameter | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL |
| Fastener Length | 0.910 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | 2S8 CAGEC 73187 MFR REF 1ST TREATMENT RESPONSE OR QQ-P-35 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Grip Length | 0.380 INCHES MAXIMUM IN |
| Width Between Flats | 0.158 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | PASSIVATE OVERALL |
| 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 | 0.555 INCHES MINIMUM AND 0.560 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 |
|---|---|
| ST3M758D6-6 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M758D6-6 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M758D6-6 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M758D6-6 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M758D6-6 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M758D6-6 PRIMARY | West Coast Aerospace, Inc. (USA) |
| ST3M758D6-6 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M456C6-6 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| ST3M456C6-6 | 5/9 Secondary reference The Boeing Company Div Defense |
| ST3M456C6-6 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| HL645LL12-6 | 5/9 Secondary reference Hi-Shear Corporation |
| ST3M456C6-6 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| HL645YE-12-6 | 5/9 Secondary reference U.S. Government activity |
| MA4456-6-6 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| HL645YE-12-6 | 5/9 Secondary reference U.S. Government activity |
| ST3M456C6-6 | 5/9 Secondary reference Hi-Shear Corporation |
| ST3M456C6-6 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| AIC-L-645-12-6 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HL645LL12-6 | 5/9 Secondary reference U.S. Government activity |
| HL645LL12-6 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HL645YE-12-6 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| HL645LL12-6 | 5/9 Secondary reference Huck International, Inc |
| ST3M456C6-6 | 5/9 Secondary reference Huck International, Inc |
| HL645LL12-6 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies Inc |
| ST3M758D6-6 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HL645YE-12-6 | 5/9 Secondary reference Hi-Shear Corporation |
| ST3M456C6-6 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-00-288-3258 is a Pin-Rivet, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-00-288-3258 has 7 manufacturer part numbers on file: ST3M758D6-6 (Howmet Global Fastening Systems Inc), ST3M758D6-6 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), ST3M758D6-6 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M758D6-6 (Sps Technologies, Llc Dba PB Fasteners), ST3M758D6-6 (Hi-Shear Corporation) and 2 more.
Key specifications for ST3M758D6-6: Shank Diameter: 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL; Fastener Length: 0.910 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN; Surface Treatment Document and Classification: 2S8 CAGEC 73187 MFR REF 1ST TREATMENT RESPONSE OR QQ-P-35 FED SPEC 2ND 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.