The Screw,close Tolerance, cataloged under National Stock Number 5305-01-211-0682, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-211-0682 |
| Primary Part Number | BACB30LH3U29 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Fastener Length | 2.142 INCHES MINIMUM AND 2.172 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.320 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.802 INCHES MINIMUM AND 1.822 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.337 INCHES MINIMUM AND 0.383 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 |
|---|---|
| BACB30LH3U29 | Huck International, Inc (USA) |
| BACB30LH3U29 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30LH3U29 | Howmet Global Fastening Systems Inc (USA) |
| BACB30LH3U29 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30LH3U29 | Federal Manufacturing Corp (USA) |
| BACB30LH3U29 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| BACB30LH3U29 | 5/9 Secondary reference U.S. Government activity |
| BACB30LH3U29 | 5/2 Secondary reference U.S. Government activity |
| BACB30LH3U29 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30LH3U29 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-211-0682 is a Screw,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-211-0682 has 6 manufacturer part numbers on file: BACB30LH3U29 (Huck International, Inc), BACB30LH3U29 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30LH3U29 (Howmet Global Fastening Systems Inc), BACB30LH3U29 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), BACB30LH3U29 (Federal Manufacturing Corp) and 1 more.
Key specifications for BACB30LH3U29: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Fastener Length: 2.142 INCHES MINIMUM AND 2.172 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC 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.