The Screw,close Tolerance, cataloged under National Stock Number 5305-01-325-5993, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-325-5993 |
| Primary Part Number | HT4075D5-12-18 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Fastener Length | 1.266 INCHES MINIMUM AND 1.296 INCHES MAXIMUM IN |
| Hole Thread Quantity Per Inch | 32 |
| Thread Length | 0.531 INCHES NOMINAL IN |
| Hole Configuration Style | ROUND LONGITUDINAL HOLE |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.750 INCHES NOMINAL IN |
| Grip Diameter | 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Hole Nominal Thread Diameter | 0.138 INCHES IN |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP XM-13 OVERALL |
| Hole Quantity | 1 |
| Hole Type | THREADED |
| Head Diameter | 0.625 INCHES MINIMUM AND 0.635 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 |
|---|---|
| HT4075D5-12-18 PRIMARY | Naval Inventory Control Point Mechanicsburg (USA) |
| HT4075D5-12-18 PRIMARY | Hi-Shear Corporation (USA) |
NSN 5305-01-325-5993 is a Screw,close Tolerance, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-325-5993 has 2 manufacturer part numbers on file: HT4075D5-12-18 (Naval Inventory Control Point Mechanicsburg), HT4075D5-12-18 (Hi-Shear Corporation).
Key specifications for HT4075D5-12-18: Fastener Length: 1.266 INCHES MINIMUM AND 1.296 INCHES MAXIMUM IN; Hole Thread Quantity Per Inch: 32; Thread Length: 0.531 INCHES NOMINAL IN; Hole Configuration Style: ROUND LONGITUDINAL HOLE. 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.