The Screw,close Tolerance, cataloged under National Stock Number 5305-01-417-2496, 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 15 specifications, cited from the U.S. Government catalog. The record lists 12 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-417-2496 |
| Primary Part Number | 3M1170D3-20A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Fastener Length | 1.580 INCHES MINIMUM AND 1.600 INCHES MAXIMUM IN |
| Thread Length | 0.345 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1895 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 | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.293 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 | X |
| Part Number | Manufacturer |
|---|---|
| 11825D3-20/11825D3-20A | Reid Products Inc. Dba Reid Products Inc (USA) |
| HP1170D3-20 | Heartland Precision Fasteners Inc (USA) |
| TX1027D3-20A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 11845D3-20/11845D3-20A | Reid Products Inc. Dba Reid Products Inc (USA) |
| HP1170D3-20A | Heartland Precision Fasteners Inc (USA) |
| TX1027D3-20A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TX1027D3-20A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| 3M1170D3-20A PRIMARY | The Boeing Company Div Defense (USA) |
| TX1027D3-20A | Howmet Global Fastening Systems Inc (USA) |
| TX1027D3-20A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1027D3-20A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| TX1027D3-20A | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 3M1170D3-20 | 5/9 Secondary reference The Boeing Company Div Defense |
| TX1027D3-20A | 5/2 Secondary reference U.S. Government activity |
| TX1027D3-20A | 5/9 Secondary reference Heartland Precision Fasteners Inc |
| 10113800 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| TX1027D3-20A | 5/2 Secondary reference U.S. Government activity |
| TX1027D3-20 | 5/9 Secondary reference Hi-Shear Corporation |
| TX1027D3-20A | 5/9 Secondary reference Sps Technologies Inc |
NSN 5305-01-417-2496 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-417-2496 has 12 manufacturer part numbers on file: 11825D3-20/11825D3-20A (Reid Products Inc. Dba Reid Products Inc), HP1170D3-20 (Heartland Precision Fasteners Inc), TX1027D3-20A (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 11845D3-20/11845D3-20A (Reid Products Inc. Dba Reid Products Inc), HP1170D3-20A (Heartland Precision Fasteners Inc) and 7 more.
Key specifications for 3M1170D3-20A: Fastener Length: 1.580 INCHES MINIMUM AND 1.600 INCHES MAXIMUM IN; Thread Length: 0.345 INCHES NOMINAL IN; Nominal Thread Diameter: 0.190 INCHES IN; Head Style: FLAT COUNTERSUNK. 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.