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Technical Data Sheet
A11574 ✓ 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 COMP 1010 OVERALL, thickness: 0.017 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN, hole_diameter: 0.187 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN, hardness_rating: 85.5 ROCKWELL B NOMINAL, overall_diameter: 0.308 INCHES MINIMUM AND 0.318 INCHES MAXIMUM IN, surface_treatment: ZINC OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-188-4185, 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
A11574
NSN: 5310-00-188-4185
FSC: 5310
CAGE: 46522 — DCM MANUFACTURING, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OVERALL
thickness0.017 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
hole_diameter0.187 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
hardness_rating85.5 ROCKWELL B NOMINAL
overall_diameter0.308 INCHES MINIMUM AND 0.318 INCHES MAXIMUM IN
surface_treatmentZINC OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-188-4185
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A11574 · 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
CENTER HOLE SHAPE STYLE: ROUND
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL: STEEL COMP 1010 OVERALL
SURFACE TREATMENT: ZINC OVERALL
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
HOLE DIAMETER: 0.187 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
PERIPHERAL SHAPE STYLE: ROUND
THICKNESS: 0.017 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE SHAPE STYLEROUND
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1010 OVERALL
SURFACE TREATMENTZINC OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.187 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.017 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN
OVERALL DIAMETER0.308 INCHES MINIMUM AND 0.318 INCHES MAXIMUM IN
HARDNESS RATING85.5 ROCKWELL B NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
103907Interchangeable
interchangeable cross-reference
interchangeable
9X261Interchangeable
interchangeable cross-reference
interchangeable
637425Interchangeable
interchangeable cross-reference
interchangeable
203562-1Interchangeable
interchangeable cross-reference
interchangeable
219Interchangeable
interchangeable cross-reference
interchangeable
Y4638RInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A11574?
A11574 is a WASHER,FLAT.
What parts can replace A11574?
There are 23 known substitutes for A11574: 103907, 9X261, 637425 and 20 more. Substitute compatibility should be verified for your specific system.
Is A11574 still available?
A11574 is currently cancelled.
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