The Bolt,close Tolerance, cataloged under National Stock Number 5306-00-019-9428, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Federal Manufacturing Corp. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-019-9428 |
| Primary Part Number | BACB30LM10DU44 |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Federal Manufacturing Corp |
| Status | ACTIVE |
| Head Height | 0.312 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN |
| Fastener Length | 3.637 INCHES MINIMUM AND 3.667 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.877 INCHES MINIMUM AND 0.927 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 81205-BACB30LM MANUFACTURERS STANDARD |
| Grip Length | 2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM IN |
| Width Between Flats | 0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN |
| Grip Diameter | 0.6235 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.378 INCHES MINIMUM AND 3.428 INCHES MAXIMUM FIRST HOLE 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 |
|---|---|
| BACB30LM10DU44 | Federal Manufacturing Corp (USA) |
| BACB30LM10DU44 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30LM10DU44 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30LM10DU44 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30LM10DU44 | J M Precision Inc (USA) |
| BACB30LM10DU44 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30LM10DU44 | Howmet Global Fastening Systems Inc (USA) |
| BACB30LM10DU44 | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| BACB30LM10DU44 | 5/2 Secondary reference U.S. Government activity |
| BACB30LM10DU44 | 5/2 Secondary reference U.S. Government activity |
| BACB30LM10DU44 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-019-9428 is a Bolt,close Tolerance, manufactured by Federal Manufacturing Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-019-9428 has 8 manufacturer part numbers on file: BACB30LM10DU44 (Federal Manufacturing Corp), BACB30LM10DU44 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30LM10DU44 (Sps Technologies, Llc Dba PB Fasteners), BACB30LM10DU44 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30LM10DU44 (J M Precision Inc) and 3 more.
Key specifications for BACB30LM10DU44: Head Height: 0.312 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN; Fastener Length: 3.637 INCHES MINIMUM AND 3.667 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.877 INCHES MINIMUM AND 0.927 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.