The Screw,close Tolerance, cataloged under National Stock Number 5305-01-043-0555, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Huck International, Inc. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-043-0555 |
| Primary Part Number | A147-4-12 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 3A A |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Fastener Length | 1.050 INCHES MINIMUM AND 1.097 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Style | FLAT COUNTERSUNK |
| Internal Drive Style | HIGH-TORQUE |
| Head Diameter | 0.389 INCHES MINIMUM AND 0.394 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 28 |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Thread Length | 0.290 INCHES MINIMUM AND 0.357 INCHES MAXIMUM IN |
| Grip Length | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Material | STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4130 OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Specification/standard Data | 26512-GB510L MANUFACTURERS STANDARD |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A147-4-12 PRIMARY | Huck International, Inc (USA) |
| HT239PB4-12 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| BM19025-4-12 | Huck Intl Inc (USA) |
| A147-4-12 | Huck Intl Inc (USA) |
| HT8043-4-12 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT8043-4-12 | Howmet Global Fastening Systems Inc Div Torrance Operations (USA) |
| GB510L4-12 | Northrop Grumman Systems Corporation (USA) |
| HT239PB4-12 PRIMARY | Hi-Shear Corporation (USA) |
| BM19025-4-12 PRIMARY | Huck International, Inc (USA) |
| 106750-4-12 PRIMARY | Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana (USA) |
NSN 5305-01-043-0555 is a Screw,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-043-0555 has 10 cross-referenced part numbers: A147-4-12 (Huck International, Inc), HT239PB4-12 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), BM19025-4-12 (Huck Intl Inc), A147-4-12 (Huck Intl Inc), HT8043-4-12 (Howmet Global Fastening Systems Inc) and 5 more.
There is 1 known substitute for 5305-01-043-0555: 5962-01-165-9350. Verify interchangeability with system specifications before substitution.
Key specifications for A147-4-12: Surface Treatment: CADMIUM AND CHROMATE OVERALL; Thread Class: 3A A; Countersink Angle: 100.0 DEGREES NOMINAL; Fastener Length: 1.050 INCHES MINIMUM AND 1.097 INCHES MAXIMUM IN. 19 total characteristics are documented in the Federal Logistics Information System.