The Standoff,threaded,spacing, cataloged under National Stock Number 5340-00-773-5899, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is United Technologies Corp Electro Systems Inc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-00-773-5899 |
| Primary Part Number | SD5279 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | United Technologies Corp Electro Systems Inc |
| Status | ACTIVE |
| Thread Length | 0.500 INCHES NOMINAL RIGHT EXTERNAL IN |
| Thread Direction | RIGHT-HAND RIGHT EXTERNAL |
| Thread Direction | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| Nominal Thread Size | 0.190 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Nominal Thread Size | 0.190 INCHES RIGHT EXTERNAL IN |
| Surface Treatment | CADMIUM STANDOFF |
| Thread Class | 2A RIGHT EXTERNAL A |
| Thread Class | 2B LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 24 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 32 RIGHT EXTERNAL |
| Material | STEEL STANDOFF |
| Thread Series Designator | UNF LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) RIGHT EXTERNAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SD5279 PRIMARY | United Technologies Corp Electro Systems Inc (USA) |
| 7735899 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| SD5279 | 5/9 Secondary reference Ambac International Corporation Div Ambac International |
NSN 5340-00-773-5899 is a Standoff,threaded,spacing, manufactured by United Technologies Corp Electro Systems Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-773-5899 has 2 manufacturer part numbers on file: SD5279 (United Technologies Corp Electro Systems Inc), 7735899 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for SD5279: Thread Length: 0.500 INCHES NOMINAL RIGHT EXTERNAL IN; Thread Direction: RIGHT-HAND RIGHT EXTERNAL; Thread Direction: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD); Nominal Thread Size: 0.190 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN. 13 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.