The Screw,close Tolerance, cataloged under National Stock Number 5305-01-537-1817, 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24 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-537-1817 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Point Diameter | 0.330 INCHES MINIMUM AND 0.335 INCHES MAXIMUM IN |
| Point Length | 0.100 INCHES NOMINAL IN |
| Fastener Length | 1.755 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS QQ-P-35 NATIONAL STD/SPEC ALL TREATMENT RESPONSES OVERALL |
| Thread Length | 0.665 INCHES MINIMUM AND 0.804 INCHES MAXIMUM IN |
| Supplementary Features | STUD BOLTS SHALL HAVE POLYPROPLENE HEAD PROTECTIVE RING INSTALLED FOR SHIPPING, CUSTOMER TO REMOVE RING BEFORE INSTALLING |
| Material Document and Classification | MS 5731 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OR AMS 5737 NATIONAL STD/SPEC 2ND MATERIAL RESPONSE OVERALL |
| Point Chamfer Angle | 45.0 DEGREES NOMINAL |
| Single Shear Strength | ERR-060 |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Point Style | CHAMFER DOG |
| Grip Length | 0.851 INCHES MINIMUM AND 0.990 INCHES MAXIMUM IN |
| Grip Diameter | 0.374 INCHES NOMINAL IN |
| Locking Feature | DETENT RING LOCKING FEATURE |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 7380 POUNDS PER SQUARE INCH LBS |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.672 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 |
|---|---|
| CA21351-6-12RS | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-537-1817 is a Screw,close Tolerance, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-537-1817: Point Diameter: 0.330 INCHES MINIMUM AND 0.335 INCHES MAXIMUM IN; Point Length: 0.100 INCHES NOMINAL IN; Fastener Length: 1.755 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.