PartsTable
Technical Data Sheet
11B5190347-1 ✓ Verified by PartsTable
· NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.062 INCHES NOMINAL IN, hole_diameter: 0.344 INCHES NOMINAL IN, overall_diameter: 1.250 INCHES NOMINAL IN, surface_treatment: ZINC OVERALL, peripheral_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-627-9781, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
11B5190347-1
NSN: 5310-01-627-9781
FSC: 5310
CAGE: 5B5M3 — DEVCOM CHEMICAL BIOLOGICAL CENTER DBA CHEMICAL BIOLOGICAL CENTER DIV U.S. DEPT OF ARMY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.062 INCHES NOMINAL IN
hole_diameter0.344 INCHES NOMINAL IN
overall_diameter1.250 INCHES NOMINAL IN
surface_treatmentZINC OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationTOOLS
cross-sectional_shape_styleRECTANGULAR
part_name_assigned_by_controlling_agencyFENDER WASHER
NSN5310-01-627-9781
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 11B5190347-1 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
MATERIAL: STEEL OVERALL
THICKNESS: 0.062 INCHES NOMINAL IN
HOLE DIAMETER: 0.344 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
CENTER HOLE SHAPE STYLE: ROUND
PERIPHERAL SHAPE STYLE: ROUND
OVERALL DIAMETER: 1.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
THICKNESS0.062 INCHES NOMINAL IN
HOLE DIAMETER0.344 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
END ITEM IDENTIFICATIONTOOLS
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER1.250 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYFENDER WASHER
SURFACE TREATMENTZINC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
R-33-MInterchangeable
interchangeable cross-reference
interchangeable
101620Interchangeable
interchangeable cross-reference
interchangeable
HG31MInterchangeable
interchangeable cross-reference
interchangeable
31891Interchangeable
interchangeable cross-reference
interchangeable
R4268FInterchangeable
interchangeable cross-reference
interchangeable
XR26345Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11B5190347-1?
11B5190347-1 is a WASHER,FLAT.
What parts can replace 11B5190347-1?
There are 9 known substitutes for 11B5190347-1: R-33-M, 101620, HG31M and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 11B5190347-1?
11B5190347-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-627-9781. This indicates validated use in U.S. government and defense supply chains.
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