The Screw,close Tolerance, cataloged under National Stock Number 5305-01-435-9807, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Federal Manufacturing Corp. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-435-9807 |
| Primary Part Number | BACB30LU5P11X |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Federal Manufacturing Corp |
| Status | ACTIVE |
| Fastener Length | 1.1415 INCHES MINIMUM AND 1.1715 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Thread Length | 0.469 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.3125 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.6775 INCHES MINIMUM AND 0.6975 INCHES MAXIMUM IN |
| Grip Diameter | 0.3266 INCHES MINIMUM AND 0.3276 INCHES MAXIMUM IN |
| Locking Feature | PATCH THREADS |
| Surface Treatment | CADMIUM AND CHROMATE FASTENER |
| 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 | 24 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING FEATURE |
| Material | STEEL COMP E4340 OR STEEL COMP 8740 FASTENER |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.574 INCHES MINIMUM AND 0.637 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 |
|---|---|
| BACB30LU5P11X | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30LU5P11X PRIMARY | Federal Manufacturing Corp (USA) |
| BACB30LU5P11X PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30LU5P11X PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30LU5P11X PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30LU5P11X | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| BACB30LU5P11X PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| BACB30LU5P11X | 3/2 Design control — primary reference U.S. Government activity |
| BACB30LU5P11X | 5/9 Secondary reference Voi-Shan/chatsworth Div of Vsi Corp Sub of Fairchild Industries Inc |
| BACB30LU5P11X | 3/2 Design control — primary reference U.S. Government activity |
| BACB30LU5P11X | 5/9 Secondary reference U.S. Government activity |
| BACB30LU5P11X | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
NSN 5305-01-435-9807 is a Screw,close Tolerance, manufactured by Federal Manufacturing Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-435-9807 has 7 manufacturer part numbers on file: BACB30LU5P11X (Sps Technologies, Llc Dba PB Fasteners), BACB30LU5P11X (Federal Manufacturing Corp), BACB30LU5P11X (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), BACB30LU5P11X (Valley-Todeco, Inc. Dba Arconic Fastening Systems), BACB30LU5P11X (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 2 more.
Key specifications for BACB30LU5P11X: Fastener Length: 1.1415 INCHES MINIMUM AND 1.1715 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416, TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER; Thread Length: 0.469 INCHES NOMINAL IN; Material Document and Classification: MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE FASTENER. 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.