The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-400-2841, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-400-2841 |
| Primary Part Number | 8183-N-0440-0 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware |
| Status | ACTIVE |
| Length | 3.700 INCHES MINIMUM AND 3.800 INCHES MAXIMUM IN |
| Thread Length | 0.250 INCHES MINIMUM RIGHT INTERNAL IN |
| Thread Length | 0.250 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | LEFT INTERNAL AND RIGHT INTERNAL THREADS |
| Material Document and Classification | L-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.250 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Direction | RIGHT-HAND RIGHT INTERNAL |
| Nominal Thread Size | 0.112 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Nominal Thread Size | 0.112 INCHES RIGHT INTERNAL IN |
| Cross-Sectional Shape | ROUND |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Class | 2B RIGHT INTERNAL |
| Thread Quantity Per Inch | 40 RIGHT INTERNAL |
| Thread Quantity Per Inch | 40 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Material | PLASTIC OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RIGHT INTERNAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 8183-N-0440-0 PRIMARY | Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware (USA) |
| Reference | Meaning |
|---|---|
| 5266667 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| 8183-N-0440-0 | 5/9 Secondary reference New Haven Mfg Corp Amatom Electronic Hardware Div |
NSN 5340-01-400-2841 is a Standoff,threaded,spacing, manufactured by Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-400-2841 has 1 manufacturer part number on file: 8183-N-0440-0 (Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware).
Key specifications for 8183-N-0440-0: Length: 3.700 INCHES MINIMUM AND 3.800 INCHES MAXIMUM IN; Thread Length: 0.250 INCHES MINIMUM RIGHT INTERNAL IN; Thread Length: 0.250 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN; Style Designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS. 18 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.