The Bolt,internal Wrenching, cataloged under National Stock Number 5306-01-669-9243, is classified within Federal Supply Class 5306 (Bolts) 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 3 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5306-01-669-9243 |
| Primary Part Number | BACB30US7K21 |
| Item Name | Bolt,internal Wrenching |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Howmet Global Fastening Systems Inc Div City of Industry Operations |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Material | TITANIUM OVERALL |
| 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 |
|---|---|
| BACB30US7K21 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30US7K21 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| BACB30US7K21 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| BACB30US7K21 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30US7K21 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30US7K21 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30US7K21 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| BACB30US7K21 | Blanc Aero Industrie Villefranche De Rouergue - Groupe Lisi Aerospace (FRA) |
| BACB30US7K21 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30US7K21 | Federal Manufacturing Corp (USA) |
| Reference | Meaning |
|---|---|
| BACB30US7K21 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-669-9243 is a Bolt,internal Wrenching, manufactured by Howmet Global Fastening Systems Inc Div City of Industry Operations, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-669-9243 has 10 manufacturer part numbers on file: BACB30US7K21 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30US7K21 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), BACB30US7K21 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), BACB30US7K21 (Sps Technologies, Llc Dba PB Fasteners), BACB30US7K21 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners) and 5 more.
1 possible match (shared part number, not a government interchangeability claim): 5306-01-687-7699. Verify interchangeability with system specifications before substitution.
Key specifications for BACB30US7K21: Thread Direction: RIGHT-HAND; Special Features: 125 KSI SHEAR, 6AL-4V, LIGHTWEIGHT V; Internal Drive Style: HEXAGON; Part Name Assigned by Controlling Agency: BOLT, PROTRUDING HEAD. 3 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.