The Screw,close Tolerance, cataloged under National Stock Number 5305-01-488-3727, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-488-3727 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Point Diameter | 0.211 INCHES MINIMUM AND 0.216 INCHES MAXIMUM IN |
| Point Length | 0.100 INCHES NOMINAL IN |
| Fastener Length | 0.857 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS QQ-P-35 NATIONAL STD/SPEC ALL TREATMENT RESPONSES OVERALL |
| Special Test Features | STUD BOLTS SHALL HAVE POLYPROPLENE HEAD PROTECTIVE RING INSTALLED FOR SHIPPING, CUSTOMER TO REMOVE RINGS BEFORE INSTALLING |
| Thread Length | 0.477 INCHES MINIMUM AND 0.607 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5731 NATIONAL STD/SPEC 1ST MATERIAL RESPONSE OR AMS5737 NATIONAL STD/SPEC 2ND MATERIAL RESPONSE OVERALL |
| Point Chamfer Angle | 45.0 DEGREES NOMINAL |
| Single Shear Strength | ERR-060 |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Point Style | CHAMFER DOG |
| Grip Length | 0.150 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN |
| Grip Diameter | 0.249 INCHES NOMINAL IN |
| Locking Feature | DETENT RING LOCKING FEATURE |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 2845 POUNDS PER SQUARE INCH LBS |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.435 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| CA21351-4-2RS | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-488-3727 is a Screw,close Tolerance, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-488-3727: Point Diameter: 0.211 INCHES MINIMUM AND 0.216 INCHES MAXIMUM IN; Point Length: 0.100 INCHES NOMINAL IN; Fastener Length: 0.857 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS QQ-P-35 NATIONAL STD/SPEC ALL TREATMENT RESPONSES OVERALL. 24 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.