The Pin-Rivet, cataloged under National Stock Number 5320-01-124-3121, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc Div City of Industry Operations. Government technical data includes 18 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-124-3121 |
| Primary Part Number | BACB30MB5-15 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Howmet Global Fastening Systems Inc Div City of Industry Operations |
| Status | ACTIVE |
| Shank Diameter | 0.1625 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Head Height | 0.055 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Fastener Length | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Grip Length | 0.933 INCHES MINIMUM AND 0.943 INCHES MAXIMUM IN |
| Width Between Flats | 0.0791 INCHES MINIMUM AND 0.0801 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNJC |
| Head Major Diameter | 0.306 INCHES MINIMUM AND 0.322 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 |
|---|---|
| BACB30MB5-15 PRIMARY | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30MB5-15 PRIMARY | West Coast Aerospace, Inc. (USA) |
| BACB30MB5-15 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BACB30MB5-15 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HL20PB-5-15 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HL20PB-5-15 | Satair A/s (DNK) |
| BACB30MB5-15 PRIMARY | Hi-Shear Corporation (USA) |
| BACB30MB5-15 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| HL20PB-5-15 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| HL20PB-5-15 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| HL20PB-5-15 | 5/9 Secondary reference U.S. Government activity |
| HL20PB-5-15 | 5/9 Secondary reference U.S. Government activity |
| BACB30MB5-15 | 7/2 Vendor item drawing reference U.S. Government activity |
| HL20PB-5-15 | 5/9 Secondary reference Hi-Shear Corporation |
| HL20PB-5-15 | 5/9 Secondary reference Huck International, Inc |
| HL20PB-5-15 | 5/9 Secondary reference U.S. Government activity |
| HL20PB-5-15 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5320-01-124-3121 is a Pin-Rivet, manufactured by Howmet Global Fastening Systems Inc Div City of Industry Operations, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-124-3121 has 8 manufacturer part numbers on file: BACB30MB5-15 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30MB5-15 (West Coast Aerospace, Inc.), BACB30MB5-15 (Howmet Global Fastening Systems Inc), BACB30MB5-15 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HL20PB-5-15 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 3 more.
Key specifications for BACB30MB5-15: Shank Diameter: 0.1625 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Head Height: 0.055 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Fastener Length: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN. 18 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.