The Pin-Rivet, cataloged under National Stock Number 5320-01-135-4186, 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 19 specifications, cited from the U.S. Government catalog. The record lists 13 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 18 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-135-4186 |
| Primary Part Number | HLT631YB-12-10 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Lubrication | DRY FILM AND CETYL ALCOHOL |
| Fastener Length | 1.160 INCHES MINIMUM AND 1.180 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | 258,FSCM 73197 MFR REF SINGLE 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 | 0.630 INCHES MAXIMUM IN |
| Width Between Flats | 0.1582 INCHES MINIMUM AND 0.1617 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 | 0.5604 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 |
|---|---|
| HLT631YB-12-10 PRIMARY | Hi-Shear Corporation (USA) |
| HLT631YB-12-10 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M758D6-10 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT631YB-12-10 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HLT631YB-12-10 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT631YB-12-10 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M758D6-10 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HP4758D6-10 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| ST3M758D6-10 | Hi-Shear Corporation (USA) |
| ST3M758D6-10 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT631YB-12-10 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M758D6-10 | West Coast Aerospace, Inc. (USA) |
| ST3M758D6-10 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| HL645YE-12-10 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| HL645YE12-10 | 5/9 Secondary reference Hi-Shear Corporation |
| HL645YE12-10 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HL645LL-12-10 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| ST3M456C6-10 | 5/9 Secondary reference The Boeing Company Div Defense |
| HL645YE12-10 | 5/9 Secondary reference U.S. Government activity |
| HL645YE12-10 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| HL645YE-12-10 | 5/9 Secondary reference U.S. Government activity |
| HL645YEAS-10 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| ST3M758D6-10 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| MA4456-6-10 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| HL645LL-12-10 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| ST3M758D6-10 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| AIC-L-645-12-10 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HL645YE-12-10 | 5/9 Secondary reference Huck International, Inc |
| HL645LL-12-10 | 5/9 Secondary reference U.S. Government activity |
| HL645LL-12-10 | 5/9 Secondary reference Hi-Shear Corporation |
| HLT631YB-12-10 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5320-01-135-4186 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-135-4186 has 13 manufacturer part numbers on file: HLT631YB-12-10 (Hi-Shear Corporation), HLT631YB-12-10 (Howmet Global Fastening Systems Inc), ST3M758D6-10 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HLT631YB-12-10 (West Coast Aerospace, Inc.), HLT631YB-12-10 (Sps Technologies, Llc Dba PB Fasteners) and 8 more.
Key specifications for HLT631YB-12-10: Shank Diameter: 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN; Lubrication: DRY FILM AND CETYL ALCOHOL; Fastener Length: 1.160 INCHES MINIMUM AND 1.180 INCHES MAXIMUM IN; Surface Treatment Document and Classification: 258,FSCM 73197 MFR REF SINGLE 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.