The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-034-3451, 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 4 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-034-3451 |
| Primary Part Number | 8211-A-0440-1B |
| 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 |
| Width Across Flats | 0.244 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN |
| Length | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Style Designator | LEFT INTERNAL AND RIGHT INTERNAL THREADS |
| Cross-Sectional Shape | HEXAGON |
| 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 |
|---|---|
| 8211-A-0440-1B | Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware (USA) |
| Reference | Meaning |
|---|---|
| 703896 | C/1 Advisory reference — outside the item-of-supply concept Ge Aviation Systems Llc Dba Ge Aviation Systems Llc |
| 8211-A-0440-1B | 5/9 Secondary reference New Haven Mfg Corp Amatom Electronic Hardware Div |
| 8211A0440-1B | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| NAS1831A4B04 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1831 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5340-01-034-3451 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 5340-01-034-3451 has 1 manufacturer part number on file: 8211-A-0440-1B (Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware).
Key specifications for 8211-A-0440-1B: Width Across Flats: 0.244 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN; Length: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN; Style Designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS; Cross-Sectional Shape: HEXAGON. 4 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.