PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

10623Washer,spring Seat

Ashcroft Inc Dba Heise · NSN 5310-00-391-8392 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-391-8392 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-391-8392. Primary manufacturer part number: 10623.
Features
  • Washer,spring Seat — FSC 5310
  • General Characteristics Item Description: STEEL; 0.750 IN. H; 3.188 INSIDE DIA; ONE 0.625 IN. DIA HOLE; 4.750 IN. O/A LG IN
  • 2 verified cross-references
  • Primary manufacturer: Ashcroft Inc Dba Heise
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Mechanical energy storage
  • Vibration dampening
General Description

The Washer,spring Seat, cataloged under National Stock Number 5310-00-391-8392, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 1 verified specification, 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
NSN5310-00-391-8392
Primary Part Number10623
Item NameWasher,spring Seat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusACTIVE
General Characteristics Item DescriptionSTEEL; 0.750 IN. H; 3.188 INSIDE DIA; ONE 0.625 IN. DIA HOLE; 4.750 IN. O/A LG IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5955-00-005-697110623 INTERCHANGEABLE
Oscillator,noncrystal Controlled
Monitor Products Co. Inc. Dba Monitor Products Co. Inc.
2915-00-153-6998 INTERCHANGEABLE
Casing,drive End,stud
5330-00-399-0725 INTERCHANGEABLE
Packing,preformed
5950-00-944-4644995552-4 INTERCHANGEABLE
Transformer,radio Frequency
Raytheon Company Div Rmd Strategic
6625-01-128-69523565-0 INTERCHANGEABLE
Adapter,test
Fluke Electronics Corp
5930-01-385-322710623 INTERCHANGEABLE
Switch,flow
Shaw Development, Llc
4730-01-421-072010623 INTERCHANGEABLE
Tee,pipe
Spx Fluid Power
6525-01-571-5422453566492551 INTERCHANGEABLE
Controller,servo,spindleblock,co
Phillips Medical Systems North America Co
Cross-Reference Index
Part NumberManufacturer
10623 PRIMARY Ashcroft Inc Dba Heise (USA)
10623 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
5955-00-005-6971INTERCHANGEABLE
OSCILLATOR,NONCRYSTAL CONTROLLED
10623
2915-00-153-6998INTERCHANGEABLE
CASING,DRIVE END,STUD
5330-00-399-0725INTERCHANGEABLE
PACKING,PREFORMED
5950-00-944-4644INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
995552-4
6625-01-128-6952INTERCHANGEABLE
ADAPTER,TEST
3565-0
5930-01-385-3227INTERCHANGEABLE
SWITCH,FLOW
10623
4730-01-421-0720INTERCHANGEABLE
TEE,PIPE
10623
6525-01-571-5422INTERCHANGEABLE
CONTROLLER,SERVO,SPINDLEBLOCK,CO
453566492551

Frequently Asked Questions

What is NSN 5310-00-391-8392?

NSN 5310-00-391-8392 is a Washer,spring Seat, manufactured by Ashcroft Inc Dba Heise, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-391-8392?

NSN 5310-00-391-8392 has 2 cross-referenced part numbers: 10623 (Ashcroft Inc Dba Heise), 10623 (Zf Industrieantriebe Witten Gmbh).

What NSN replaces 5310-00-391-8392?

There are 8 known substitutes for 5310-00-391-8392: 5955-00-005-6971, 2915-00-153-6998, 5330-00-399-0725 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 10623?

Key specifications for 10623: General Characteristics Item Description: STEEL; 0.750 IN. H; 3.188 INSIDE DIA; ONE 0.625 IN. DIA HOLE; 4.750 IN. O/A LG IN. 1 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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