The Standoff,threaded,spacing, cataloged under National Stock Number 5340-00-185-0375, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Keystone Electronics Corp. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-185-0375 |
| Primary Part Number | 1644 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — No Item Name Available |
| Manufacturer | Keystone Electronics Corp |
| Status | ACTIVE |
| Flange Width Across Flats | 0.250 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Direction | RIGHT-HAND RIGHT EXTERNAL |
| Material Document and Classification | QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE STANDOFF |
| Flange Thickness | 1.000 INCHES NOMINAL IN |
| Style Designator | FLANGED WITH LEFT INTERNAL THREAD |
| Thread Quantity Per Inch | 32 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RIGHT EXTERNAL |
| Nominal Thread Size | 0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Surface Treatment Document and Classification | QQ-P-416 TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE STANDOFF |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Class | 2A RIGHT EXTERNAL A |
| Surface Treatment | CADMIUM AND CHROMATE STANDOFF |
| Thread Quantity Per Inch | 32 RIGHT EXTERNAL |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Length | 1.250 INCHES NOMINAL IN |
| Material | COPPER ALLOY 360 STANDOFF |
| Nominal Thread Size | 0.138 INCHES RIGHT EXTERNAL IN |
| Acquisition Status | ACTIVE |
| Successor | 5340-00-598-3827 (8254) |
| HAZMAT | No |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 1644 PRIMARY | Keystone Electronics Corp (USA) |
| 9743-B-0632-37 | New Haven Mfg Corp Amatom Electronic Hardware Div (USA) |
| 8254 | Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron (USA) |
| 9743B0632-3 | Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware (USA) |
| 990B056254-3 | L3 Technologies, Inc. Div L3 Keo (USA) |
| 05625 | L3 Technologies, Inc. Div L3 Keo (USA) |
| 8254 | Dialight Corporation (USA) |
| 129-1006-00 | Tektronix, Inc. (USA) |
| 9743B0632-3 | New Haven Mfg Corp Amatom Electronic Hardware Div (USA) |
NSN 5340-00-185-0375 is a Standoff,threaded,spacing, manufactured by Keystone Electronics Corp, classified under FSC 5340 (No Item Name Available). Status: active.
NSN 5340-00-185-0375 has 9 cross-referenced part numbers: 1644 (Keystone Electronics Corp), 9743-B-0632-37 (New Haven Mfg Corp Amatom Electronic Hardware Div), 8254 (Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron), 9743B0632-3 (Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware), 990B056254-3 (L3 Technologies, Inc. Div L3 Keo) and 4 more.
There are 12 known substitutes for 5340-00-185-0375: 5340-00-598-3827, 6530-01-565-6581, 2825-00-036-3370 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1644: Flange Width Across Flats: 0.250 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD); Thread Direction: RIGHT-HAND RIGHT EXTERNAL; Material Document and Classification: QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE STANDOFF. 18 total characteristics are documented in the Federal Logistics Information System.