The Pin-Rivet, cataloged under National Stock Number 5320-01-231-5948, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. The record lists 23 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 — Rivets (FSG 53) |
| Manufacturers | Howmet Global Fastening Systems Inc (CAGE 06950); Sps Technologies, Llc Dba PB Fasteners (CAGE 56878); Heartland Precision Fasteners Inc (CAGE 0ZC92); West Coast Aerospace, Inc. (CAGE 60516); Huck International, Inc (CAGE 17446) |
| Parameter | Value |
|---|---|
| NSN | 5320-01-231-5948 |
| Primary Part Number | ST3M812-4-8 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| ST3M812-4-8 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M812-4-8 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M812-4-8 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| HLT151TB-8-8 | West Coast Aerospace, Inc. (USA) |
| HLT151DL-8-8 | Huck International, Inc (USA) |
| HLT151DL-8-8 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT151TB-8-8 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M812-4-8 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HLT151DL-8-8 | Howmet Global Fastening Systems Inc (USA) |
| HLT151TB-8-8 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT151DL-8-8 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT151TB-8-8 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT151TB-8-8 | Hi-Shear Corporation (USA) |
| ST3M812-4-8 PRIMARY | Huck International, Inc (USA) |
| HLT151TB-8-8 | Huck International, Inc (USA) |
| HP4812-4-8 | Heartland Precision Fasteners Inc (USA) |
| ST3M812-4-8 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT151DL-8-8 | West Coast Aerospace, Inc. (USA) |
| HLT151TB-8-8 | Howmet Global Fastening Systems Inc (USA) |
| HLT151DL-8-8 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| AIC-L-762-4-8 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HLT151TB-8-8 | 5/9 Secondary reference U.S. Government activity |
| MA4812-4-8 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| HLT151DL-8-8 | 5/9 Secondary reference U.S. Government activity |
| ST3M812-4-8 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HLT151TB-8-8 | 5/9 Secondary reference U.S. Government activity |
| HLT151DL-8-8 | 5/9 Secondary reference U.S. Government activity |
| 10202974 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5320-01-231-5948 is a Pin-Rivet, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-231-5948 has 23 manufacturer part numbers on file: ST3M812-4-8 (Howmet Global Fastening Systems Inc), ST3M812-4-8 (Sps Technologies, Llc Dba PB Fasteners), ST3M812-4-8 (Heartland Precision Fasteners Inc), HLT151TB-8-8 (West Coast Aerospace, Inc.), HLT151DL-8-8 (Huck International, Inc) and 18 more.
1 possible match (shared part number, not a government interchangeability claim): 5330-01-312-7150. Verify interchangeability with system specifications before substitution.
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.