PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

99-57Washer,spring Tension

Hamilton Sundstrand Corporation · NSN 5310-00-595-9994 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-595-9994 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-595-9994. Primary manufacturer part number: 99-57.
Features
  • Washer,spring Tension — FSC 5310
  • Hole Diameter: 0.390 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Material Thickness: 0.031 INCHES NOMINAL IN
  • Style Designator: SPRING TENSION
  • Outside Diameter: 0.625 INCHES NOMINAL IN
  • 3 verified cross-references
  • Primary manufacturer: Hamilton Sundstrand Corporation
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Mechanical energy storage
  • Vibration dampening
General Description

The Washer,spring Tension, cataloged under National Stock Number 5310-00-595-9994, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hamilton Sundstrand Corporation. Government technical data includes 5 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-595-9994
Primary Part Number99-57
Item NameWasher,spring Tension
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation
StatusACTIVE
Hole Diameter0.390 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Material Thickness0.031 INCHES NOMINAL IN
Style DesignatorSPRING TENSION
Outside Diameter0.625 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
2805-00-528-6396 INTERCHANGEABLE
Valve,poppet,engine
5950-01-076-182112272683 INTERCHANGEABLE
Transformer,pulse
U S Army Tank Automotive Command Amsta-Im-Mm
4820-01-255-88999957D41M INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
5331-01-525-01609957 INTERCHANGEABLE
O-Ring
DP Manufacturing Inc.
5140-01-542-7175P12612811 INTERCHANGEABLE
Cabinet,tool,mobile
Fairbanks Morse, Llc
Cross-Reference Index
Part NumberManufacturer
99-57 PRIMARY Hamilton Sundstrand Corporation (USA)
99-57 Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA)
99-57 Donallco Inc (USA)
Related Parts
2805-00-528-6396INTERCHANGEABLE
VALVE,POPPET,ENGINE
5950-01-076-1821INTERCHANGEABLE
TRANSFORMER,PULSE
12272683
4820-01-255-8899INTERCHANGEABLE
VALVE,SAFETY RELIEF
9957D41M
5331-01-525-0160INTERCHANGEABLE
O-RING
9957
5140-01-542-7175INTERCHANGEABLE
CABINET,TOOL,MOBILE
P12612811

Frequently Asked Questions

What is NSN 5310-00-595-9994?

NSN 5310-00-595-9994 is a Washer,spring Tension, manufactured by Hamilton Sundstrand Corporation, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-595-9994?

NSN 5310-00-595-9994 has 3 cross-referenced part numbers: 99-57 (Hamilton Sundstrand Corporation), 99-57 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us), 99-57 (Donallco Inc).

What NSN replaces 5310-00-595-9994?

There are 5 known substitutes for 5310-00-595-9994: 2805-00-528-6396, 5950-01-076-1821, 4820-01-255-8899 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 99-57?

Key specifications for 99-57: Hole Diameter: 0.390 INCHES NOMINAL IN; Material: STEEL OVERALL; Material Thickness: 0.031 INCHES NOMINAL IN; Style Designator: SPRING TENSION. 6 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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