The Screw,close Tolerance, cataloged under National Stock Number 5305-01-693-1406, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Saturn Fasteners Inc. Government technical data includes 21 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-693-1406 |
| Primary Part Number | SF116B5-8 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Saturn Fasteners Inc |
| Status | ACTIVE |
| Head Height | 0.071 INCHES NOMINAL IN |
| Fastener Length | 1.001 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-DTL-83488, TYPE II, CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.501 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 | 0.3125 INCHES IN |
| Features Provided | DRY FILM LUBRICANT |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.500 INCHES NOMINAL IN |
| Grip Diameter | 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 6300 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 | 24 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.429 INCHES MINIMUM AND 0.479 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 |
|---|---|
| SF116B5-8 PRIMARY | Saturn Fasteners Inc (USA) |
| 93926B5-8 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| VT10021B5-8 PRIMARY | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| GS1009B5-8 PRIMARY | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| AIC618B5-8 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| Reference | Meaning |
|---|---|
| 93926B5-8 | 3/2 Design control — primary reference U.S. Government activity |
| C20645 | D/9 Drawing number reference only U.S. Government activity |
| C20645B5-8 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5305-01-693-1406 is a Screw,close Tolerance, manufactured by Saturn Fasteners Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-693-1406 has 5 manufacturer part numbers on file: SF116B5-8 (Saturn Fasteners Inc), 93926B5-8 (Sps Technologies, Llc Dba PB Fasteners), VT10021B5-8 (Valley-Todeco, Inc. Dba Arconic Fastening Systems), GS1009B5-8 (B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace), AIC618B5-8 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for SF116B5-8: Head Height: 0.071 INCHES NOMINAL IN; Fastener Length: 1.001 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-DTL-83488, TYPE II, CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.501 INCHES NOMINAL IN. 21 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.