PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51848-10Washer,lock

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-01-322-3555 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-322-3555 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-322-3555. Primary manufacturer part number: MS51848-10.
Features
  • Washer,lock — FSC 5310
  • Hole Diameter: 0.254 INCHES MINIMUM AND 0.262 INCHES MAXIMUM IN
  • Material Document and Classification: QQ-N-286,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Departure From Cited Document: AS DIFFERENTIATED BY MATERIAL
  • Material: NICKEL ALLOY K-500 OVERALL
  • Outside Diameter: 0.365 INCHES MAXIMUM IN
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Material Thickness: 0.078 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Nickel Alloy K-500 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-322-3555, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 7 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
NSN5310-01-322-3555
Primary Part NumberMS51848-10
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Hole Diameter0.254 INCHES MINIMUM AND 0.262 INCHES MAXIMUM IN
Material Document and ClassificationQQ-N-286,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Departure From Cited DocumentAS DIFFERENTIATED BY MATERIAL
MaterialNICKEL ALLOY K-500 OVERALL
Outside Diameter0.365 INCHES MAXIMUM IN
Style DesignatorSPLIT HELICAL-RIGHT HAND
Material Thickness0.078 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5310-00-143-6272 INTERCHANGEABLE
Washer,lock
5310-00-171-1733 INTERCHANGEABLE
Washer,lock
5310-01-606-0733 INTERCHANGEABLE
Washer,lock
Cross-Reference Index
Part NumberManufacturer
MS51848-10 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-143-6272INTERCHANGEABLE
WASHER,LOCK
5310-00-171-1733INTERCHANGEABLE
WASHER,LOCK
5310-01-606-0733INTERCHANGEABLE
WASHER,LOCK

Frequently Asked Questions

What is NSN 5310-01-322-3555?

NSN 5310-01-322-3555 is a Washer,lock, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-322-3555?

NSN 5310-01-322-3555 has 1 cross-referenced part number: MS51848-10 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-01-322-3555?

There are 3 known substitutes for 5310-01-322-3555: 5310-00-143-6272, 5310-00-171-1733, 5310-01-606-0733. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51848-10?

Key specifications for MS51848-10: Hole Diameter: 0.254 INCHES MINIMUM AND 0.262 INCHES MAXIMUM IN; Material Document and Classification: QQ-N-286,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Departure From Cited Document: AS DIFFERENTIATED BY MATERIAL; Material: NICKEL ALLOY K-500 OVERALL. 7 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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