The Screw,close Tolerance, cataloged under National Stock Number 5305-01-436-2386, 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 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5305-01-436-2386 |
| Primary Part Number | BACB30LH3-9 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Fastener Length | 0.893 INCHES MINIMUM AND 0.923 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.345 INCHES NOMINAL IN |
| Material Document and Classification | AMMMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.553 INCHES MINIMUM AND 0.573 INCHES MAXIMUM IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE 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 |
|---|---|
| BACB30LH3-9 | Huck International, Inc (USA) |
| BACB30LH3-9 | Federal Manufacturing Corp (USA) |
| BACB30LH3-9 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30LH3-9 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30LH3-9 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30LH3-9 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30LH3-9 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30LH3-9 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| BACB30LH3-9 | 5/9 Secondary reference Voi-Shan/chatsworth Div of Vsi Corp Sub of Fairchild Industries Inc |
| BACB30LH3-9 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30LH3-9 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-436-2386 is a Screw,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-436-2386 has 8 manufacturer part numbers on file: BACB30LH3-9 (Huck International, Inc), BACB30LH3-9 (Federal Manufacturing Corp), BACB30LH3-9 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30LH3-9 (Howmet Global Fastening Systems Inc Div City of Industry Operations), BACB30LH3-9 (Valley-Todeco, Inc. Dba Arconic Fastening Systems) and 3 more.
1 possible match (shared part number, not a government interchangeability claim): 5305-01-669-6758. Verify interchangeability with system specifications before substitution.
Key specifications for BACB30LH3-9: Fastener Length: 0.893 INCHES MINIMUM AND 0.923 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.345 INCHES NOMINAL IN; Material Document and Classification: AMMMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 17 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.