PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6557Washer,lock

Pratt Henry Co · NSN 5310-01-269-8185 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-269-8185 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-269-8185. Primary manufacturer part number: 6557.
Features
  • Washer,lock — FSC 5310
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
  • Criticality Code Justification: ZZZY
  • 2 verified cross-references
  • Primary manufacturer: Pratt Henry Co
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-269-8185, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Pratt Henry Co. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-269-8185
Primary Part Number6557
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPratt Henry Co
StatusACTIVE
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5120-00-075-1064107E5825-1 INTERCHANGEABLE
Puller,bearing
The Boeing Company
5306-00-226-4826AEB02C312875AW9A91 INTERCHANGEABLE
Bolt,machine
The American Society of Mechanical Engineers
5950-00-583-476910-20076-8 INTERCHANGEABLE
Transformer,power Autotransforme
The Boeing Company Div Legacy Wichita
5305-00-852-50566557 INTERCHANGEABLE
Thumbscrew
Hutchinson Aerospace & Industry, Inc. Dba Vlier Div Vlier
5305-01-032-81906557 INTERCHANGEABLE
Screw,special
Naval Inventory Control Point Mechanicsburg
5930-01-095-9836990530 INTERCHANGEABLE
Switch,rotary
Mac Motors, Inc
6532-01-317-153706613 INTERCHANGEABLE
Diaper,adult's
Procter and Gamble Distribution Co Food Service and Lodging Products Di
5330-01-412-94036557 INTERCHANGEABLE
Gasket
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
6515-01-561-1822CA9383 INTERCHANGEABLE
Stockinet,surgical
Performance Health Supply, Llc Dba Sammons Preston Rolyan
3120-01-618-85246557 INTERCHANGEABLE
Bearing,washer,thrust
Harley Davidson Motor Co Inc
Cross-Reference Index
Part NumberManufacturer
6557 Pratt Henry Co (USA)
C-5526 IT36 Pratt Henry Co (USA)
Related Parts
5120-00-075-1064INTERCHANGEABLE
PULLER,BEARING
107E5825-1
5306-00-226-4826INTERCHANGEABLE
BOLT,MACHINE
AEB02C312875AW9A91
5950-00-583-4769INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
10-20076-8
5305-00-852-5056INTERCHANGEABLE
THUMBSCREW
6557
5305-01-032-8190INTERCHANGEABLE
SCREW,SPECIAL
6557
5930-01-095-9836INTERCHANGEABLE
SWITCH,ROTARY
990530
6532-01-317-1537INTERCHANGEABLE
DIAPER,ADULT'S
06613
5330-01-412-9403INTERCHANGEABLE
GASKET
6557
6515-01-561-1822INTERCHANGEABLE
STOCKINET,SURGICAL
CA9383
3120-01-618-8524INTERCHANGEABLE
BEARING,WASHER,THRUST
6557
2610-01-668-5820INTERCHANGEABLE
TIRE,PNEUMATIC,VEHICULAR
6557

Frequently Asked Questions

What is NSN 5310-01-269-8185?

NSN 5310-01-269-8185 is a Washer,lock, manufactured by Pratt Henry Co, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-269-8185?

NSN 5310-01-269-8185 has 2 cross-referenced part numbers: 6557 (Pratt Henry Co), C-5526 IT36 (Pratt Henry Co).

What NSN replaces 5310-01-269-8185?

There are 11 known substitutes for 5310-01-269-8185: 5120-00-075-1064, 5306-00-226-4826, 5950-00-583-4769 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6557?

Key specifications for 6557: Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS; Criticality Code Justification: ZZZY. 2 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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