PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B-357-1Washer,flat

Smiths Aerospace, Inc., Electronic Systems-Grand Rapids · NSN 5310-01-095-4015 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-095-4015 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-095-4015. Primary manufacturer part number: B-357-1.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 0.188 INCHES NOMINAL IN
  • Hole Diameter: 0.118 INCHES NOMINAL IN
  • Specification/standard Data: 30377-357-K MANUFACTURERS STANDARD
  • Surface Treatment Document and Classification: MIL-C-5541,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Surface Treatment: OXIDE FILM OVERALL
  • Material Document and Classification: QQ-A-200/9,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: ALUMINUM ALLOY 6061 OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Aluminum Alloy 6061 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-095-4015, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Smiths Aerospace, Inc., Electronic Systems-Grand Rapids. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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
NSN5310-01-095-4015
Primary Part NumberB-357-1
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerSmiths Aerospace, Inc., Electronic Systems-Grand Rapids
StatusACTIVE
Overall Diameter0.188 INCHES NOMINAL IN
Hole Diameter0.118 INCHES NOMINAL IN
Specification/standard Data30377-357-K MANUFACTURERS STANDARD
Surface Treatment Document and ClassificationMIL-C-5541,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentOXIDE FILM OVERALL
Material Document and ClassificationQQ-A-200/9,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialALUMINUM ALLOY 6061 OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.062 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5360-00-391-084235-71 INTERCHANGEABLE
Spring,helical,extension
Telemechanics Inc
5342-00-450-2268 INTERCHANGEABLE
Sash Fastener
2530-00-481-23092908735 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
Chrysler Realty Company Llc Dba Daimler Chrysler
3120-00-580-1713 INTERCHANGEABLE
Bushing,sleeve
4730-00-769-3964A-5041 INTERCHANGEABLE
Reducer,tube
Mueller Brass Co.
5950-00-910-92926140042-2 INTERCHANGEABLE
Transformer,radio Frequency
Viking Technologies, Ltd.
5945-01-099-46653571 INTERCHANGEABLE
Relay,electromagnetic
Crown Audio, Inc. Dba Crown International
3130-01-289-439835-71 INTERCHANGEABLE
Housing,bearing Unit
Cone Drive Operations Inc
5950-01-335-3038646-2045-001 INTERCHANGEABLE
Transformer,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
4720-01-500-0627A357-1 INTERCHANGEABLE
Hose,nonmetallic
Crane Carrier Company, Llc
Cross-Reference Index
Part NumberManufacturer
B-357-1 PRIMARY Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
357-1 PRIMARY Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
B357-1K PRIMARY Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
357-K Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
Related Parts
5360-00-391-0842INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
35-71
5342-00-450-2268INTERCHANGEABLE
SASH FASTENER
2530-00-481-2309INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
2908735
3120-00-580-1713INTERCHANGEABLE
BUSHING,SLEEVE
4730-00-769-3964INTERCHANGEABLE
REDUCER,TUBE
A-5041
5950-00-910-9292INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
6140042-2
5945-01-099-4665INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
3571
3130-01-289-4398INTERCHANGEABLE
HOUSING,BEARING UNIT
35-71
5950-01-335-3038INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
646-2045-001
4720-01-500-0627INTERCHANGEABLE
HOSE,NONMETALLIC
A357-1
3220-01-616-0002INTERCHANGEABLE
SAW,RADIAL OVERARM,WOODWORKING
3571

Frequently Asked Questions

What is NSN 5310-01-095-4015?

NSN 5310-01-095-4015 is a Washer,flat, manufactured by Smiths Aerospace, Inc., Electronic Systems-Grand Rapids, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-095-4015?

NSN 5310-01-095-4015 has 4 cross-referenced part numbers: B-357-1 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids), 357-1 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids), B357-1K (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids), 357-K (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids).

What NSN replaces 5310-01-095-4015?

There are 11 known substitutes for 5310-01-095-4015: 5360-00-391-0842, 5342-00-450-2268, 2530-00-481-2309 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B-357-1?

Key specifications for B-357-1: Overall Diameter: 0.188 INCHES NOMINAL IN; Hole Diameter: 0.118 INCHES NOMINAL IN; Specification/standard Data: 30377-357-K MANUFACTURERS STANDARD; Surface Treatment Document and Classification: MIL-C-5541,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 11 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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