The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-591-6980, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-591-6980 |
| Primary Part Number | 91075A171 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Width Across Flats | 0.375 INCHES NOMINAL IN |
| Length | 0.750 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES NOMINAL RIGHT EXTERNAL IN |
| Thread Length | 0.344 INCHES MINIMUM AND 0.500 INCHES MAXIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Style Designator | LEFT INTERNAL AND RIGHT EXTERNAL THREAD |
| 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 |
| Cross-Sectional Shape | HEXAGON |
| Thread Quantity Per Inch | 32 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Thread Quantity Per Inch | 32 RIGHT EXTERNAL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Right Projection Diameter | 0.190 INCHES NOMINAL IN |
| Thread Series Designator | UNF RIGHT EXTERNAL |
| Thread Series Designator | UNF LEFT INTERNAL (INCLUDES THRU THREAD) |
| Right Projection Length | 0.375 INCHES NOMINAL IN |
| 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 |
|---|---|
| 91075A171 PRIMARY | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 235-C2423-2 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 5340-01-591-6980 is a Standoff,threaded,spacing, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-591-6980 has 1 manufacturer part number on file: 91075A171 (Mcmaster-Carr Supply Co).
Key specifications for 91075A171: Width Across Flats: 0.375 INCHES NOMINAL IN; Length: 0.750 INCHES NOMINAL IN; Thread Length: 0.375 INCHES NOMINAL RIGHT EXTERNAL IN; Thread Length: 0.344 INCHES MINIMUM AND 0.500 INCHES MAXIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN. 17 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.