The Screw,close Tolerance, cataloged under National Stock Number 5305-01-417-9049, 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 19 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-417-9049 |
| Primary Part Number | 3M1170D3-2A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Fastener Length | 0.455 INCHES MINIMUM AND 0.485 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 | 0.125 INCHES NOMINAL IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 2200 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE III |
| 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 0.301 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 |
|---|---|
| TX1027D3-2A | Howmet Global Fastening Systems Inc (USA) |
| 3M1170D3-2A | Huck International, Inc (USA) |
| 3M1170D3-2A PRIMARY | The Boeing Company Div Defense (USA) |
| 3M1170D3-2A | Reid Products Inc. Dba Reid Products Inc (USA) |
| 3M1170D3-2A | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| TX1027D3-2A | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M1170D3-2A | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| 11845D3-2/11845D3-2A | Reid Products Inc. Dba Reid Products Inc (USA) |
| HP1170D3-2A | Heartland Precision Fasteners Inc (USA) |
| 3M1170D3-2A | Viessmann Werke Gmbh & Co. Kg (DEU) |
| 11825D3-2/11825D3-2A | Reid Products Inc. Dba Reid Products Inc (USA) |
| TX1027D3-2A | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1027D3-2A | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| TX1027D3-2A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| TX1027D3-2A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| TX1027D3-2A | Hi-Shear Corporation (USA) |
| 3M1170D3-2A | Houston Precision Fasteners I Lp (USA) |
| 3M1170D3-2A | West Coast Aerospace, Inc. (USA) |
| 3M1170D3-2A | B & B Specialties Inc Dba Gs Aerospace Div Gs Aerospace (USA) |
| Reference | Meaning |
|---|---|
| TX1027D3-2 | 5/9 Secondary reference Hi-Shear Corporation |
| TX1027D3-2A | 5/9 Secondary reference Heartland Precision Fasteners Inc |
| HP1170D3-2 | 5/9 Secondary reference Heartland Precision Fasteners Inc |
| 3M1170D3-2 | 5/9 Secondary reference U.S. Government activity |
| 3M1170D3-2 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| 10113805 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| TX1027D3-2A | 5/2 Secondary reference U.S. Government activity |
| TX1027D3-2A | 5/2 Secondary reference U.S. Government activity |
| TX1027D3-2 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| 3M1170D3-2 | 5/9 Secondary reference The Boeing Company Div Defense |
| TX1027D3-2A | 5/9 Secondary reference Sps Technologies Inc |
| TX102703-2A | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies Inc |
| 3M1170D3-2 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5305-01-417-9049 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-417-9049 has 19 manufacturer part numbers on file: TX1027D3-2A (Howmet Global Fastening Systems Inc), 3M1170D3-2A (Huck International, Inc), 3M1170D3-2A (The Boeing Company Div Defense), 3M1170D3-2A (Reid Products Inc. Dba Reid Products Inc), 3M1170D3-2A (Fastener Innovation Technology, Inc. Dba F I T) and 14 more.
Key specifications for 3M1170D3-2A: Fastener Length: 0.455 INCHES MINIMUM AND 0.485 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.