PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H-978-B PC 195Washer,flat

The Whitmor Co. Inc. Div the Whitmor Comapny Inc. · NSN 5310-01-149-7789 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-149-7789 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-149-7789. Primary manufacturer part number: H-978-B PC 195.
Features
  • Washer,flat — FSC 5310
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
  • 3 verified cross-references
  • Primary manufacturer: The Whitmor Co. Inc. Div the Whitmor Comapny Inc.
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-149-7789, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The Whitmor Co. Inc. Div the Whitmor Comapny Inc.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-149-7789
Primary Part NumberH-978-B PC 195
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerThe Whitmor Co. Inc. Div the Whitmor Comapny Inc.
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5310-00-680-6745 INTERCHANGEABLE
Washer,flat
5310-00-880-5977MS15795-811 INTERCHANGEABLE
Washer,flat
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-01-032-6480 INTERCHANGEABLE
Washer,flat
5310-01-447-6391 INTERCHANGEABLE
Washer,flat
Cross-Reference Index
Part NumberManufacturer
H-978-B PC 195 The Whitmor Co. Inc. Div the Whitmor Comapny Inc. (USA)
MS15795-811 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
FF-W-92,5/16-MODI.3/8TAP The Whitmor Co. Inc. Div the Whitmor Comapny Inc. (USA)
Related Parts
5310-00-680-6745INTERCHANGEABLE
WASHER,FLAT
5310-00-880-5977INTERCHANGEABLE
WASHER,FLAT
MS15795-811
5310-01-032-6480INTERCHANGEABLE
WASHER,FLAT
5310-01-447-6391INTERCHANGEABLE
WASHER,FLAT

Frequently Asked Questions

What is NSN 5310-01-149-7789?

NSN 5310-01-149-7789 is a Washer,flat, manufactured by The Whitmor Co. Inc. Div the Whitmor Comapny Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-149-7789?

NSN 5310-01-149-7789 has 3 cross-referenced part numbers: H-978-B PC 195 (The Whitmor Co. Inc. Div the Whitmor Comapny Inc.), MS15795-811 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), FF-W-92,5/16-MODI.3/8TAP (The Whitmor Co. Inc. Div the Whitmor Comapny Inc.).

What NSN replaces 5310-01-149-7789?

There are 4 known substitutes for 5310-01-149-7789: 5310-00-680-6745, 5310-00-880-5977, 5310-01-032-6480 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of H-978-B PC 195?

Key specifications for H-978-B PC 195: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS. 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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