The Screw,close Tolerance, cataloged under National Stock Number 5305-01-507-5050, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-507-5050 |
| Primary Part Number | HT4017-08-11 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Fastener Length | 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN |
| Thread Length | 0.312 INCHES NOMINAL IN |
| Material Document and Classification | 23-112,MCDONNEL DOUGLAS CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.1640 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Grip Diameter | 0.1630 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM IN |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNJC |
| Head Diameter | 0.2916 INCHES MINIMUM AND 0.3016 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 |
|---|---|
| HT4017-08-11 PRIMARY | Huck International, Inc (USA) |
| HT4017-08-11 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M649-08-11 | The Boeing Company Div Defense (USA) |
| HT4017-08-11 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4017-08-11 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HT4017-08-11 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-507-5050 is a Screw,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-507-5050 has 5 manufacturer part numbers on file: HT4017-08-11 (Huck International, Inc), HT4017-08-11 (Sps Technologies, Llc Dba PB Fasteners), ST3M649-08-11 (The Boeing Company Div Defense), HT4017-08-11 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT4017-08-11 (Hi-Shear Corporation).
Key specifications for HT4017-08-11: Fastener Length: 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN; Thread Length: 0.312 INCHES NOMINAL IN; Material Document and Classification: 23-112,MCDONNEL DOUGLAS CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.1640 INCHES IN. 15 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.