PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

103028Washer,flat

Hammonds Technical Services, Inc. · NSN 5310-01-666-5058 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-666-5058 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-666-5058. Primary manufacturer part number: 103028.
Features
  • Washer,flat — FSC 5310
  • Cross-Sectional Shape Style: RECTANGULAR
  • Center Hole Shape Style: ROUND
  • Peripheral Shape Style: ROUND
  • 1 verified cross-reference
  • Primary manufacturer: Hammonds Technical Services, Inc.
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-666-5058, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hammonds Technical Services, Inc.. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-666-5058
Primary Part Number103028
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHammonds Technical Services, Inc.
StatusACTIVE
Cross-Sectional Shape StyleRECTANGULAR
Center Hole Shape StyleROUND
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5310-00-010-3028 INTERCHANGEABLE
Nut,plain,hexagon
5945-01-162-0511103028 INTERCHANGEABLE
Relay,electromagnetic
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5330-01-389-9136103028 INTERCHANGEABLE
Gasket
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Cross-Reference Index
Part NumberManufacturer
103028 PRIMARY Hammonds Technical Services, Inc. (USA)
Related Parts
5310-00-010-3028INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5945-01-162-0511INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
103028
5330-01-389-9136INTERCHANGEABLE
GASKET
103028

Frequently Asked Questions

What is NSN 5310-01-666-5058?

NSN 5310-01-666-5058 is a Washer,flat, manufactured by Hammonds Technical Services, Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-666-5058?

NSN 5310-01-666-5058 has 1 cross-referenced part number: 103028 (Hammonds Technical Services, Inc.).

What NSN replaces 5310-01-666-5058?

There are 3 known substitutes for 5310-01-666-5058: 5310-00-010-3028, 5945-01-162-0511, 5330-01-389-9136. Verify interchangeability with system specifications before substitution.

What are the specifications of 103028?

Key specifications for 103028: Cross-Sectional Shape Style: RECTANGULAR; End Item Identification: KC-46A TANKER SUPPORT EQUIPMENT A; Part Name Assigned by Controlling Agency: FLAT WASHER; Center Hole Shape Style: ROUND. 5 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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