The Screw,close Tolerance, cataloged under National Stock Number 5305-01-173-5048, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Services. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 17 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-173-5048 |
| Primary Part Number | ST3M455-3L17-1 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Services |
| Status | ACTIVE |
| Fastener Length | 1.454 INCHES MINIMUM AND 1.484 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.382 INCHES MINIMUM AND 0.432 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE 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 | 0.297 INCHES MINIMUM AND 0.302 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 | F |
| Part Number | Manufacturer |
|---|---|
| ST3M455-3L17-1 | The Boeing Company Div Services (USA) |
| Reference | Meaning |
|---|---|
| ST3M455-3L17-1 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| ST3M455-3L17-1 | 5/9 Secondary reference U.S. Government activity |
| 11907-3L17-1 | 5/9 Secondary reference Reid Products Inc. Dba Reid Products Inc |
| HT4024L3-17 | 5/9 Secondary reference U.S. Government activity |
| ST3M455-3L17-1 | 3/9 Design control — primary reference Howmet Global Fastening Systems Inc |
| HT4024L3-17 | 5/9 Secondary reference U.S. Government activity |
| 10115542 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| ST3M455-3L17-1 | 5/9 Secondary reference Sps Technologies Inc |
| ST3M455-3L17-1 | 5/9 Secondary reference Fastener Innovation Technology, Inc. Dba F I T |
| ST3M455-3L17-1 | 5/9 Secondary reference Sps Technologies Ltd, Tj Brooks Division |
| ST3M455-3L17-1 | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| ST3M455-3L17-1 | 5/9 Secondary reference Hi-Shear Corporation |
| HT4024L3-17 | 5/9 Secondary reference Huck International, Inc |
| HT4024L3-17 | 5/9 Secondary reference Hi-Shear Corporation |
| ST3M455-3L17-1 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT4024L3-17 | 5/9 Secondary reference U.S. Government activity |
| HT4024L3-17 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5305-01-173-5048 is a Screw,close Tolerance, manufactured by The Boeing Company Div Services, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-173-5048 has 1 manufacturer part number on file: ST3M455-3L17-1 (The Boeing Company Div Services).
Key specifications for ST3M455-3L17-1: Fastener Length: 1.454 INCHES MINIMUM AND 1.484 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.382 INCHES MINIMUM AND 0.432 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.