PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

310-6340-000Washer,flat

Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems · NSN 5310-00-136-6133 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-136-6133 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-136-6133. Primary manufacturer part number: 310-6340-000.
Features
  • Washer,flat — FSC 5310
  • Center Hole Shape Style: ROUND
  • Surface Treatment: PASSIVATE OVERALL
  • Material: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 316 OVERALL
  • Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Peripheral Shape Style: ROUND
  • Thickness: 0.021 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 301 or Steel Comp 302 or Steel Comp 316 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-136-6133, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-136-6133
Primary Part Number310-6340-000
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
StatusCANCELLED
Center Hole Shape StyleROUND
Surface TreatmentPASSIVATE OVERALL
MaterialSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 316 OVERALL
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Peripheral Shape StyleROUND
Thickness0.021 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
Overall Diameter0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
Hole Diameter0.122 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5310-00-974-662301-0296 ITEM NO 67 INTERCHANGEABLE
Washer,lock
Ward Leonard Ct Llc
Cross-Reference Index
Part NumberManufacturer
310-6340-000 Wrought Washer Mfg., Inc. (USA)
310-6340-00 Wrought Washer Mfg., Inc. (USA)
10163821 Nimikkeistokeskus Ncb Finland (FIN)
310-6340-00 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
310-6340-000 PRIMARY Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
Related Parts
5310-00-974-6623INTERCHANGEABLE
WASHER,LOCK
01-0296 ITEM NO 67

Frequently Asked Questions

What is NSN 5310-00-136-6133?

NSN 5310-00-136-6133 is a Washer,flat, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-136-6133?

NSN 5310-00-136-6133 has 5 cross-referenced part numbers: 310-6340-000 (Wrought Washer Mfg., Inc.), 310-6340-00 (Wrought Washer Mfg., Inc.), 10163821 (Nimikkeistokeskus Ncb Finland), 310-6340-00 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 310-6340-000 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).

What NSN replaces 5310-00-136-6133?

There is 1 known substitute for 5310-00-136-6133: 5310-00-974-6623. Verify interchangeability with system specifications before substitution.

What are the specifications of 310-6340-000?

Key specifications for 310-6340-000: Center Hole Shape Style: ROUND; Surface Treatment: PASSIVATE OVERALL; Material: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 316 OVERALL; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-136-6133 still in active supply?

NSN 5310-00-136-6133 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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