PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5511Washer,flat

Avox Systems Inc Dba Avox Systems Inc · NSN 5310-00-988-8049 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-988-8049 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-988-8049. Primary manufacturer part number: 5511.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
  • Hole Diameter: 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
  • Overall Diameter: 0.750 INCHES NOMINAL IN
  • Material: PLASTIC POLYAMIDE NYLON OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Thickness: 0.031 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Plastic Polyamide Nylon Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-988-8049, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Avox Systems Inc Dba Avox Systems Inc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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
NSN5310-00-988-8049
Primary Part Number5511
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAvox Systems Inc Dba Avox Systems Inc
StatusACTIVE
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Hole Diameter0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
Overall Diameter0.750 INCHES NOMINAL IN
MaterialPLASTIC POLYAMIDE NYLON OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.031 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3110-00-156-7925 INTERCHANGEABLE
Bearing,ball,annular
6685-00-574-90175-511 INTERCHANGEABLE
Indicator,pressure
Wintec Llc
5935-00-993-23135511 INTERCHANGEABLE
Connector,receptacle,electrical
Itt Cannon Rf Products
6105-01-075-556210MG-170-AT/100-AE-3A INTERCHANGEABLE
Motor-Tachometer Generator
American Precision Industries, Inc Div Portescap Us
7350-01-089-12346612-1-6-R INTERCHANGEABLE
Tumbler,drinking
Giga, Inc.
6515-01-196-950592411 INTERCHANGEABLE
Knife,general Surgical
Ansell Healthcare Products Llc Dba Ansell Div Ansell Healthcare
5915-01-210-2400551-1 INTERCHANGEABLE
Filter,band Pass
Frequency Selective Networks, Inc. Dba Frequency Selective Networks Inc
5935-01-373-65065511 INTERCHANGEABLE
Adapter Set,connector
Fluke Electronics Corp
6625-01-394-08065511 INTERCHANGEABLE
Case,test Set
Becklin Holdings, Inc.
6515-01-558-565212060 INTERCHANGEABLE
Depressor,scleral
Welch Allyn, Inc.
Cross-Reference Index
Part NumberManufacturer
5511 PRIMARY Avox Systems Inc Dba Avox Systems Inc (USA)
Related Parts
3110-00-156-7925INTERCHANGEABLE
BEARING,BALL,ANNULAR
6685-00-574-9017INTERCHANGEABLE
INDICATOR,PRESSURE
5-511
5935-00-993-2313INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5511
6105-01-075-5562INTERCHANGEABLE
MOTOR-TACHOMETER GENERATOR
10MG-170-AT/100-AE-3A
7350-01-089-1234INTERCHANGEABLE
TUMBLER,DRINKING
6612-1-6-R
6515-01-196-9505INTERCHANGEABLE
KNIFE,GENERAL SURGICAL
92411
5915-01-210-2400INTERCHANGEABLE
FILTER,BAND PASS
551-1
5935-01-373-6506INTERCHANGEABLE
ADAPTER SET,CONNECTOR
5511
6625-01-394-0806INTERCHANGEABLE
CASE,TEST SET
5511
6515-01-558-5652INTERCHANGEABLE
DEPRESSOR,SCLERAL
12060
1630-01-580-9167INTERCHANGEABLE
CAP,WEAR,AIRCRAFT BRAKE
551-1

Frequently Asked Questions

What is NSN 5310-00-988-8049?

NSN 5310-00-988-8049 is a Washer,flat, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-988-8049?

NSN 5310-00-988-8049 has 1 cross-referenced part number: 5511 (Avox Systems Inc Dba Avox Systems Inc).

What NSN replaces 5310-00-988-8049?

There are 11 known substitutes for 5310-00-988-8049: 3110-00-156-7925, 6685-00-574-9017, 5935-00-993-2313 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5511?

Key specifications for 5511: Peripheral Shape Style: ROUND; Center Hole Shape Style: ROUND; Hole Diameter: 0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Overall Diameter: 0.750 INCHES NOMINAL IN. 7 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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