The Standoff,threaded,spacing, cataloged under National Stock Number 5340-01-440-5187, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Bath Iron Works Corporation. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-440-5187 |
| Primary Part Number | 8100-1256-0303 PIECE 40 |
| Item Name | Standoff,threaded,spacing |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Bath Iron Works Corporation |
| Status | ACTIVE |
| Flange Diameter | 3.250 INCHES NOMINAL IN |
| Length | 4.062 INCHES NOMINAL IN |
| Diameter | 1.502 INCHES MINIMUM AND 1.503 INCHES MAXIMUM IN |
| Nominal Thread Size | 1.000 INCHES RIGHT EXTERNAL IN |
| Cross-Sectional Shape | ROUND |
| Material | STEEL OVERALL |
| 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 |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 8100-1256-0303 PIECE 40 PRIMARY | Bath Iron Works Corporation (USA) |
| Reference | Meaning |
|---|---|
| HSLA STL ASTM A 588 3-1/4 IN OD | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5340-01-440-5187 is a Standoff,threaded,spacing, manufactured by Bath Iron Works Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-440-5187 has 1 manufacturer part number on file: 8100-1256-0303 PIECE 40 (Bath Iron Works Corporation).
Key specifications for 8100-1256-0303 PIECE 40: Flange Diameter: 3.250 INCHES NOMINAL IN; Length: 4.062 INCHES NOMINAL IN; Diameter: 1.502 INCHES MINIMUM AND 1.503 INCHES MAXIMUM IN; Nominal Thread Size: 1.000 INCHES RIGHT EXTERNAL IN. 7 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.