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PartsTable / COMPONENT / 10189781
10189781 ✓ 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 PIN,GROOVED,HEADED is a the manufacturer industrial component. Key specifications include height: 0.062 INCHES NOMINAL IN, diameter: 0.310 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, material: STEEL COMP 630 OVERALL, head_style: FLAT, surface_finish: 125.0 MICROINCHES OVERALL, undercut_width: 0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-494-9548, 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
10189781
NSN: 5315-00-494-9548
FSC: 5315
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
height0.062 INCHES NOMINAL IN
diameter0.310 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
materialSTEEL COMP 630 OVERALL
head_styleFLAT
surface_finish125.0 MICROINCHES OVERALL
undercut_width0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
first_end_styleSQUARE
effective_length0.885 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN
style_designatorGROOVE
pin_head_diameter0.468 INCHES NOMINAL IN
surface_treatmentCHROMIUM OVERALL
under_head_length0.968 INCHES NOMINAL IN
NSN5315-00-494-9548
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10189781 · 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
•
EFFECTIVE LENGTH: 0.885 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN
•
HEAD STYLE: FLAT
•
SURFACE FINISH: 125.0 MICROINCHES OVERALL
•
MATERIAL: STEEL COMP 630 OVERALL
•
DIAMETER: 0.310 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
HEIGHT: 0.062 INCHES NOMINAL IN
•
UNDERCUT WIDTH: 0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
EFFECTIVE LENGTH0.885 INCHES MINIMUM AND 0.895 INCHES MAXIMUM IN
HEAD STYLEFLAT
SURFACE FINISH125.0 MICROINCHES OVERALL
MATERIALSTEEL COMP 630 OVERALL
DIAMETER0.310 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HEIGHT0.062 INCHES NOMINAL IN
UNDERCUT WIDTH0.029 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
PIN HEAD DIAMETER0.468 INCHES NOMINAL IN
UNDER HEAD LENGTH0.968 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
3003780Interchangeable
interchangeable cross-reference
interchangeable
N1313-6Interchangeable
interchangeable cross-reference
interchangeable
N3222Interchangeable
interchangeable cross-reference
interchangeable
457-5622Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10189781?
10189781 is a PIN,GROOVED,HEADED.
What parts can replace 10189781?
There are 4 known substitutes for 10189781: 3003780, N1313-6, N3222 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10189781?
10189781 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-494-9548. 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