PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21851NPC14Washer,flat

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 5310-01-448-1556 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-448-1556 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-448-1556. Primary manufacturer part number: 21851NPC14.
Features
  • Washer,flat — FSC 5310
  • Material Document and Classification: ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: NICKEL ALLOY 400 OVERALL
  • Hole Diameter: 0.531 INCHES NOMINAL IN
  • Overall Diameter: 0.997 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Thickness: 0.188 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Nickel Alloy 400 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-448-1556, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-448-1556
Primary Part Number21851NPC14
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Material Document and ClassificationASTM B164 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialNICKEL ALLOY 400 OVERALL
Hole Diameter0.531 INCHES NOMINAL IN
Overall Diameter0.997 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Thickness0.188 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5965-00-067-0290533-030-009-694 INTERCHANGEABLE
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3110-00-117-4716261866 INTERCHANGEABLE
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Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5905-00-590-221041910 INTERCHANGEABLE
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Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
3419-00-999-040241910 INTERCHANGEABLE
Threading Machine,pipe and Bolt
Ridge Tool Company
5930-01-018-059341910 INTERCHANGEABLE
Switch Subassembly
Setra Systems, Inc. Dba Gems Sensors
6840-01-180-0167COMBAT SOURCE KILL MAX R1 INTERCHANGEABLE
Insecticide,combat
Dial Corp the
5950-01-222-3350366010-1 INTERCHANGEABLE
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Raytheon Company Dba Raytheon
Cross-Reference Index
Part NumberManufacturer
21851NPC14 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
41910 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
5965-00-067-0290INTERCHANGEABLE
CUSHION,EAR
533-030-009-694
3110-00-117-4716INTERCHANGEABLE
RETAINER AND ROLLERS,BEARING
261866
2810-00-118-8651INTERCHANGEABLE
COVER,ENGINE POPPET VALVE ROCKER
41910
5905-00-590-2210INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
41910
3419-00-999-0402INTERCHANGEABLE
THREADING MACHINE,PIPE AND BOLT
41910
5930-01-018-0593INTERCHANGEABLE
SWITCH SUBASSEMBLY
41910
6840-01-180-0167INTERCHANGEABLE
INSECTICIDE,COMBAT
COMBAT SOURCE KILL MAX R1
5950-01-222-3350INTERCHANGEABLE
TRANSFORMER,POWER
366010-1

Frequently Asked Questions

What is NSN 5310-01-448-1556?

NSN 5310-01-448-1556 is a Washer,flat, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-448-1556?

NSN 5310-01-448-1556 has 2 cross-referenced part numbers: 21851NPC14 (Leslie Controls, Inc. Dba Leslie Controls Inc), 41910 (Zf Industrieantriebe Witten Gmbh).

What NSN replaces 5310-01-448-1556?

There are 8 known substitutes for 5310-01-448-1556: 5965-00-067-0290, 3110-00-117-4716, 2810-00-118-8651 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21851NPC14?

Key specifications for 21851NPC14: Material Document and Classification: ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: NICKEL ALLOY 400 OVERALL; Hole Diameter: 0.531 INCHES NOMINAL IN; Overall Diameter: 0.997 INCHES NOMINAL IN. 8 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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