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PartsTable / COMPONENT / 999H0101 PIECE
999H0101 PIECE ✓ 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,SHOULDERED AND RECESSED is a the manufacturer industrial component. Key specifications include recess_depth: 0.184 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN, hole_diameter: 1.182 INCHES NOMINAL IN, recess_diameter: 1.697 INCHES MINIMUM AND 1.699 INCHES MAXIMUM IN, shoulder_height: 0.062 INCHES NOMINAL IN, outside_diameter: 2.000 INCHES NOMINAL IN, style_designator: SHOULDERED AND RECESSED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-131-2956, 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
999H0101 PIECE
NSN: 5310-01-131-2956
FSC: 5310
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
recess_depth0.184 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
hole_diameter1.182 INCHES NOMINAL IN
recess_diameter1.697 INCHES MINIMUM AND 1.699 INCHES MAXIMUM IN
shoulder_height0.062 INCHES NOMINAL IN
outside_diameter2.000 INCHES NOMINAL IN
style_designatorSHOULDERED AND RECESSED
shoulder_diameter1.437 INCHES NOMINAL IN
material_thickness0.312 INCHES NOMINAL IN
NSN5310-01-131-2956
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 999H0101 PIECE · 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
•
RECESS DEPTH: 0.184 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SHOULDERED AND RECESSED
•
HOLE DIAMETER: 1.182 INCHES NOMINAL IN
•
SHOULDER HEIGHT: 0.062 INCHES NOMINAL IN
•
SHOULDER DIAMETER: 1.437 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.312 INCHES NOMINAL IN
•
RECESS DIAMETER: 1.697 INCHES MINIMUM AND 1.699 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 2.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
RECESS DEPTH0.184 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
STYLE DESIGNATORSHOULDERED AND RECESSED
HOLE DIAMETER1.182 INCHES NOMINAL IN
SHOULDER HEIGHT0.062 INCHES NOMINAL IN
SHOULDER DIAMETER1.437 INCHES NOMINAL IN
MATERIAL THICKNESS0.312 INCHES NOMINAL IN
RECESS DIAMETER1.697 INCHES MINIMUM AND 1.699 INCHES MAXIMUM IN
OUTSIDE DIAMETER2.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
27-148Interchangeable
interchangeable cross-reference
interchangeable
27A148Interchangeable
interchangeable cross-reference
interchangeable
A718RInterchangeable
interchangeable cross-reference
interchangeable
Y-2-6X6X6Interchangeable
interchangeable cross-reference
interchangeable
Y-2-6Interchangeable
interchangeable cross-reference
interchangeable
E14270AInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 999H0101 PIECE?
999H0101 PIECE is a WASHER,SHOULDERED AND RECESSED.
What parts can replace 999H0101 PIECE?
There are 6 known substitutes for 999H0101 PIECE: 27-148, 27A148, A718R and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 999H0101 PIECE?
999H0101 PIECE is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-131-2956. 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