NSN 5310-01-050-0278 · NIIN 010500278 · Part number WA1930
Ambac International Corporation Div Ambac International · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 01843
Government record, cited
NSN 5310-01-050-0278 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-050-0278. Manufacturer of record part number: WA1930.
Also searched as5310-01-050-0278 ·
5310010500278 ·
NIIN 010500278 ·
01-050-0278 ·
FSC 5310 Nuts and Washers · CAGE 01843 · WA1930 · 147-0277 · WA0130
Outside Diameter: 0.328 INCHES NOMINAL0.328 INCHES NOMINAL IN
Material Thickness: 0.049 INCHES NOMINAL0.049 INCHES NOMINAL IN
Surface Treatment: CADMIUM AND CHROMATE OVERALL
Material: STEEL OVERALL
Hole Diameter: 0.156 INCHES NOMINAL0.156 INCHES NOMINAL IN
2 manufacturer part numbers on file
Identification
NSN: 5310-01-050-0278
NIIN: 010500278
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: WA1930
Manufacturer: Ambac International Corporation Div Ambac International
General Description
The Washer,lock, cataloged under National Stock Number 5310-01-050-0278, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ambac International Corporation Div Ambac International. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
Technical Specifications
Parameter
Value
NSN
5310-01-050-0278
Primary Part Number
WA1930
Item Name
Washer,lock
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Ambac International Corporation Div Ambac International
Ambac International Corporation Div Ambac International (USA)
Reference documents
Reference
Meaning
WA0130
5/9Secondary reference
Ambac International Corporation Div Ambac International
No interchangeability data on file.
Other items in FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040
5310-00-000-0040 · Item name not on file
5310-00-000-0077
NUT,PLAIN,ROUND
5310-00-000-0079
WASHER,FLAT
5310-00-000-0079
WASHER,FLAT
5310-00-000-1146
5310-00-000-1146 · Item name not on file
5310-00-000-3815
5310-00-000-3815 · Item name not on file
5310-00-000-4532
5310-00-000-4532 · Item name not on file
5310-00-000-4540
5310-00-000-4540 · Item name not on file
Frequently Asked Questions
What is NSN 5310-01-050-0278?
NSN 5310-01-050-0278 is a Washer,lock, manufactured by Ambac International Corporation Div Ambac International, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-050-0278?
NSN 5310-01-050-0278 has 2 manufacturer part numbers on file: 147-0277 (Cummins Power Generation Inc.), WA1930 (Ambac International Corporation Div Ambac International).
What are the specifications of WA1930?
Key specifications for WA1930: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.328 INCHES NOMINAL0.328 INCHES NOMINAL IN; Material Thickness: 0.049 INCHES NOMINAL0.049 INCHES NOMINAL IN; Surface Treatment: CADMIUM AND CHROMATE OVERALL. 6 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-050-0278 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.