The Screw,close Tolerance, cataloged under National Stock Number 5305-01-202-6855, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 16 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-202-6855 |
| Primary Part Number | HT4057-3-5A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Fastener Length | 0.703 INCHES MINIMUM AND 0.733 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-83488,TYPE 2 CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.381 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM AND CHROMATE OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.338 INCHES MINIMUM AND 0.381 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 |
|---|---|
| HT4057-3-5A PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4057-3-5A PRIMARY | Hi-Shear Corporation (USA) |
| HT4057-3-5A | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| HT4057-3-5A PRIMARY | Huck International, Inc (USA) |
| ST3M733-3L5 | Heartland Precision Fasteners Inc (USA) |
| ST3M733-3L5 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| WC4057-3-5 PRIMARY | West Coast Aerospace, Inc. (USA) |
| ST3M733-3L5 | Twist Tite Mfg, Inc Dba Twist Tite Manufacturing Inc (USA) |
| HT4057-3-5A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HT4057-3-5A PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M733-3L5 | Houston Precision Fasteners I Lp (USA) |
| HT4057-3-5A PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT4057-3-5A | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4057-3-5A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 11935-3L5 | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST3M733-3L5 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| ST3M733-3L5 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4057-3-5A | 5/9 Secondary reference U.S. Government activity |
| HT4057-3-5A | 5/2 Secondary reference U.S. Government activity |
| CHT4057-3-5 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| HT4057-3-5A | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-202-6855 is a Screw,close Tolerance, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-202-6855 has 16 manufacturer part numbers on file: HT4057-3-5A (Sps Technologies, Llc Dba PB Fasteners), HT4057-3-5A (Hi-Shear Corporation), HT4057-3-5A (Howmet Global Fastening Systems Inc Div City of Industry Operations), HT4057-3-5A (Huck International, Inc), ST3M733-3L5 (Heartland Precision Fasteners Inc) and 11 more.
Key specifications for HT4057-3-5A: Fastener Length: 0.703 INCHES MINIMUM AND 0.733 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-83488,TYPE 2 CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.381 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN; Material Document and Classification: AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 17 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.