The Screw,close Tolerance, cataloged under National Stock Number 5305-01-101-8537, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 18 commercial cross-references from 14 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-101-8537 |
| Primary Part Number | ST3M455-7L9M |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Thread Quantity Per Inch | 20 |
| Grip Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | PASSIVATE OVERALL |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Fastener Length | 1.203 INCHES MINIMUM AND 1.233 INCHES MAXIMUM IN |
| Head Diameter | 0.612 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Internal Drive Style | HIGH-TORQUE |
| Head Style | FLAT COUNTERSUNK |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Direction | RIGHT-HAND |
| Grip Diameter | 0.4365 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Thread Length | 0.631 INCHES MINIMUM AND 0.681 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 434990 | Sps Technologies Inc (USA) |
| 434990 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HT4024L7-9M | Huck Intl Inc (USA) |
| HT4024L7-9M | Hi-Shear Corporation (USA) |
| 434990 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HT4024L7-9M | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M544-7L9M | Howmet Global Fastening Systems Inc (USA) |
| ST3M455-7L9M PRIMARY | The Boeing Company Div Defense (USA) |
| HT4024L7-9M | Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana (USA) |
| ST3M544-7L9M | Hi-Shear Corporation (USA) |
| HT4024L7-9M | Howmet Global Fastening Systems Inc Div Torrance Operations (USA) |
| ST3M455-7L9M | Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana (USA) |
| ST3M544-7L9M | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 434990 | West Coast Aerospace, Inc. (USA) |
| ST3M455-7L9M | Huck International, Inc (USA) |
| ST3M4555-7L9M | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| WC4024L7-9M | West Coast Aerospace, Inc. (USA) |
| 11907-7L9M | Reid Products Inc. Dba Reid Products Inc (USA) |
NSN 5305-01-101-8537 is a Screw,close Tolerance, manufactured by The Boeing Company Div Defense, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-101-8537 has 18 cross-referenced part numbers: 434990 (Sps Technologies Inc), 434990 (Fastener Innovation Technology, Inc. Dba F I T), HT4024L7-9M (Huck Intl Inc), HT4024L7-9M (Hi-Shear Corporation), 434990 (Sps Technologies Ltd, Tj Brooks Division) and 13 more.
There are 2 known substitutes for 5305-01-101-8537: 2840-00-816-8637, 4730-01-212-5775. Verify interchangeability with system specifications before substitution.
Key specifications for ST3M455-7L9M: Thread Quantity Per Inch: 20; Grip Length: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 20 total characteristics are documented in the Federal Logistics Information System.