PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11677Washer,flat

M-D Pneumatics Inc · NSN 5310-01-029-8937 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-029-8937 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-029-8937. Primary manufacturer part number: 11677.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 1.375 INCHES NOMINAL IN
  • Thickness: 0.117 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
  • Material: STEEL COMP 1212 OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Hole Diameter: 0.986 INCHES MINIMUM AND 0.990 INCHES MAXIMUM IN
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1212 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-029-8937, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is M-D Pneumatics 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-029-8937
Primary Part Number11677
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerM-D Pneumatics Inc
StatusACTIVE
Overall Diameter1.375 INCHES NOMINAL IN
Thickness0.117 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
MaterialSTEEL COMP 1212 OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Hole Diameter0.986 INCHES MINIMUM AND 0.990 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5120-00-157-21330-474 INTERCHANGEABLE
Wrench,spanner
Martin Sprocket and Gear Inc
5305-00-206-0170 INTERCHANGEABLE
Setscrew
5999-00-254-381111677 INTERCHANGEABLE
Cap,electrical
General Electric Company
5310-00-264-194311677 INTERCHANGEABLE
Washer,flat
Garwood/feller Inc Garwood Winch Div
5365-00-283-574011677 INTERCHANGEABLE
Spacer,sleeve
Grimes Aerospace Company
5935-00-284-396311677 INTERCHANGEABLE
Cover,electrical Connector
Entron Industries Limited Partnership Dba Entron Industries Property Div
6615-00-717-2079B11677G1 INTERCHANGEABLE
Bellows Assy
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
1560-00-784-022011677 INTERCHANGEABLE
Rod,flap Control
Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company
Cross-Reference Index
Part NumberManufacturer
11677 M-D Pneumatics Inc (USA)
Related Parts
5120-00-157-2133INTERCHANGEABLE
WRENCH,SPANNER
0-474
5305-00-206-0170INTERCHANGEABLE
SETSCREW
5999-00-254-3811INTERCHANGEABLE
CAP,ELECTRICAL
11677
5310-00-264-1943INTERCHANGEABLE
WASHER,FLAT
11677
5365-00-283-5740INTERCHANGEABLE
SPACER,SLEEVE
11677
5935-00-284-3963INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
11677
6615-00-717-2079INTERCHANGEABLE
BELLOWS ASSY
B11677G1
1560-00-784-0220INTERCHANGEABLE
ROD,FLAP CONTROL
11677

Frequently Asked Questions

What is NSN 5310-01-029-8937?

NSN 5310-01-029-8937 is a Washer,flat, manufactured by M-D Pneumatics Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-029-8937?

NSN 5310-01-029-8937 has 1 cross-referenced part number: 11677 (M-D Pneumatics Inc).

What NSN replaces 5310-01-029-8937?

There are 8 known substitutes for 5310-01-029-8937: 5120-00-157-2133, 5305-00-206-0170, 5999-00-254-3811 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11677?

Key specifications for 11677: Overall Diameter: 1.375 INCHES NOMINAL IN; Special Features: 0.060 IN. BY 45 DEG CHAMFER ON ONE SIDE IN; Thickness: 0.117 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN; Material: STEEL COMP 1212 OVERALL. 8 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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