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H11740 ✓ 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,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1215 OVERALL, recess_angle: 82.0 DEGREES NOMINAL, hole_diameter: 0.453 INCHES NOMINAL IN, recess_diameter: 0.781 INCHES NOMINAL IN, outside_diameter: 1.250 INCHES NOMINAL IN, special_features: COUNTERBORE 0.750 DIA TO DEPTH OF 0.032 PRIOR TO 82 DEG COUNTERSINK. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-136-1616, 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
H11740
NSN: 5310-00-136-1616
FSC: 5310
CAGE: 03951 — ROCKWELL INTL CORP GRAPHIC SYSTEMS DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 1215 OVERALL
recess_angle82.0 DEGREES NOMINAL
hole_diameter0.453 INCHES NOMINAL IN
recess_diameter0.781 INCHES NOMINAL IN
outside_diameter1.250 INCHES NOMINAL IN
special_featuresCOUNTERBORE 0.750 DIA TO DEPTH OF 0.032 PRIOR TO 82 DEG COUNTERSINK
style_designatorRECESSED
material_thickness0.188 INCHES NOMINAL IN
material_document_and_classificationAISI,C-1215 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-136-1616
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: H11740 · 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 DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
RECESS ANGLE: 82.0 DEGREES NOMINAL
•
RECESS DIAMETER: 0.750 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.480 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 1.250 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.188 INCHES NOMINAL IN
•
STYLE DESIGNATOR: RECESSED
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESCOUNTERBORE 0.750 DIA TO DEPTH OF 0.032 PRIOR TO 82 DEG COUNTERSINK
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
RECESS ANGLE82.0 DEGREES NOMINAL
RECESS DIAMETER0.750 INCHES NOMINAL IN
HOLE DIAMETER0.480 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.250 INCHES NOMINAL IN
MATERIAL THICKNESS0.188 INCHES NOMINAL IN
STYLE DESIGNATORRECESSED
MATERIALSTEEL COMP 1212 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
H11740Interchangeable
interchangeable cross-reference
interchangeable
11740Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H11740?
H11740 is a WASHER,RECESSED.
What parts can replace H11740?
There are 2 known substitutes for H11740: H11740, 11740. Substitute compatibility should be verified for your specific system.
What is the NSN for H11740?
H11740 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-136-1616. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026