The Screw,close Tolerance, cataloged under National Stock Number 5305-01-693-2574, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-693-2574 |
| Primary Part Number | GS1009-4-11 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace |
| Status | ACTIVE |
| Head Height | 0.063 INCHES NOMINAL IN |
| Fastener Length | 1.0905 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | NAS672 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.403 INCHES NOMINAL IN |
| Hardness Rating | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS6487 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.6875 INCHES NOMINAL IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 3960 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.350 INCHES MINIMUM AND 0.399 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 |
|---|---|
| GS1009-4-11 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| VT10021-4-11 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 93926-4-11 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AIC618-4-11 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| SF116-4-11 PRIMARY | Saturn Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| C20645-4-11 | 7/2 Vendor item drawing reference U.S. Government activity |
| C20645 | D/9 Drawing number reference only U.S. Government activity |
| 93926-4-11 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-693-2574 is a Screw,close Tolerance, manufactured by B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-693-2574 has 5 manufacturer part numbers on file: GS1009-4-11 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), VT10021-4-11 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), 93926-4-11 (Sps Technologies, Llc Dba PB Fasteners), AIC618-4-11 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), SF116-4-11 (Saturn Fasteners Inc).
Key specifications for GS1009-4-11: Head Height: 0.063 INCHES NOMINAL IN; Fastener Length: 1.0905 INCHES NOMINAL IN; Surface Treatment Document and Classification: NAS672 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.403 INCHES NOMINAL IN. 20 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.