The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-499-5590, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Accurate Screw Machine Corp Div Accurate Screw Machine Corporation. Government technical data includes 10 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-499-5590 |
| Primary Part Number | 1130H-SS-.500-12 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Length | 0.500 INCHES NOMINAL IN |
| Style Designator | LEFT INTERNAL AND RIGHT INTERNAL THREADS |
| Nominal Thread Size | 6.000 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN |
| Nominal Thread Size | 6.000 INCHES RIGHT INTERNAL IN |
| Cross-Sectional Shape | HEXAGON |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Quantity Per Inch | 32 RIGHT INTERNAL |
| Thread Quantity Per Inch | 32 LEFT INTERNAL (INCLUDES THRU THREAD) |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| 926761 | L3 Technologies, Inc. Div L3 Keo (USA) |
| 1130H-SS-.500-12 PRIMARY | Accurate Screw Machine Corp Div Accurate Screw Machine Corporation (USA) |
NSN 5340-01-499-5590 is a Standoff,threaded,spacing, manufactured by Accurate Screw Machine Corp Div Accurate Screw Machine Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-499-5590 has 2 manufacturer part numbers on file: 926761 (L3 Technologies, Inc. Div L3 Keo), 1130H-SS-.500-12 (Accurate Screw Machine Corp Div Accurate Screw Machine Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-720-9389. Verify interchangeability with system specifications before substitution.
Key specifications for 1130H-SS-.500-12: Width Across Flats: 0.250 INCHES NOMINAL IN; Length: 0.500 INCHES NOMINAL IN; Style Designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS; Nominal Thread Size: 6.000 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN. 10 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.