The Screw,close Tolerance, cataloged under National Stock Number 5305-01-417-2495, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-417-2495 |
| Primary Part Number | 3M1170D4-20 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Fastener Length | 1.660 INCHES MINIMUM AND 1.690 INCHES MAXIMUM IN |
| Thread Length | 0.425 INCHES MINIMUM IN |
| Single Shear Strength | ERR-060 |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | CROSS RECESS TYPE II |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.358 INCHES MINIMUM AND 0.386 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 |
|---|---|
| 11845D4-20 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1170D4-20 PRIMARY | The Boeing Company Div Defense (USA) |
| TX1027D4-20 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 11825D4-20 | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1170D4-20 | Reid Products Inc. Dba Reid Products Inc (USA) |
NSN 5305-01-417-2495 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-417-2495 has 5 manufacturer part numbers on file: 11845D4-20 (Reid Products Inc. Dba Reid Products Inc), 3M1170D4-20 (The Boeing Company Div Defense), TX1027D4-20 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 11825D4-20 (Reid Products Inc. Dba Reid Products Inc), 3M1170D4-20 (Reid Products Inc. Dba Reid Products Inc).
Key specifications for 3M1170D4-20: Fastener Length: 1.660 INCHES MINIMUM AND 1.690 INCHES MAXIMUM IN; Thread Length: 0.425 INCHES MINIMUM IN; Single Shear Strength: ERR-060; Nominal Thread Diameter: 0.250 INCHES IN. 16 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.