PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

23111-99-0411Washer,lock

Rheinmetall Landsysteme Gmbh · NSN 5310-00-045-0591 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-045-0591 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-045-0591. Primary manufacturer part number: 23111-99-0411.
Features
  • Washer,lock — FSC 5310
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Material Thickness: 0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: QQ-P-416,OR QQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Material Document and Classification: FED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Surface Treatment: CADMIUM AND ZINC OVERALL
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Hole Diameter: 0.141 INCHES MINIMUM AND 0.148 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-00-045-0591, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rheinmetall Landsysteme Gmbh. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN5310-00-045-0591
Primary Part Number23111-99-0411
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRheinmetall Landsysteme Gmbh
StatusCANCELLED
Style DesignatorSPLIT HELICAL-RIGHT HAND
Material Thickness0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-416,OR QQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Material Document and ClassificationFED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 FED STD SINGLE MATERIAL RESPONSE OVERALL
Surface TreatmentCADMIUM AND ZINC OVERALL
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Hole Diameter0.141 INCHES MINIMUM AND 0.148 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Outside Diameter0.250 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5310-00-045-4007NASM35338-41 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
23111-99-0411 Rheinmetall Landsysteme Gmbh (DEU)
MS35338-22 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
23111-99-0411 Henschel Wehrtechnik Gmbh (DEU)
Related Parts
5310-00-045-4007INTERCHANGEABLE
WASHER,LOCK
NASM35338-41

Frequently Asked Questions

What is NSN 5310-00-045-0591?

NSN 5310-00-045-0591 is a Washer,lock, manufactured by Rheinmetall Landsysteme Gmbh, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-045-0591?

NSN 5310-00-045-0591 has 3 cross-referenced part numbers: 23111-99-0411 (Rheinmetall Landsysteme Gmbh), MS35338-22 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 23111-99-0411 (Henschel Wehrtechnik Gmbh).

What NSN replaces 5310-00-045-0591?

There is 1 known substitute for 5310-00-045-0591: 5310-00-045-4007. Verify interchangeability with system specifications before substitution.

What are the specifications of 23111-99-0411?

Key specifications for 23111-99-0411: Style Designator: SPLIT HELICAL-RIGHT HAND; Material Thickness: 0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,OR QQ-Z-325 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: FED STD 66,AISI C1060 THRU C1080 OR SAE 1060 THRU 1080 FED STD SINGLE MATERIAL RESPONSE OVERALL. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-045-0591 still in active supply?

NSN 5310-00-045-0591 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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