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PartsTable / COMPONENT / X70971 PIECE 21
X70971 PIECE 21 ✓ 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 NUT,SLEEVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: SLEEVE, nut_length: 0.750 INCHES NOMINAL IN, nut_diameter: 0.618 INCHES MINIMUM AND 0.622 INCHES MAXIMUM IN, thread_class: 3B, thread_length: 0.625 INCHES NOMINAL OVERALL 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 5310-01-197-2574, 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
X70971 PIECE 21
NSN: 5310-01-197-2574
FSC: 5310
CAGE: 97370 — SPX FLOW US, LLC DBA SPX VALVES & CONTROLS (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleSLEEVE
nut_length0.750 INCHES NOMINAL IN
nut_diameter0.618 INCHES MINIMUM AND 0.622 INCHES MAXIMUM IN
thread_class3B
thread_length0.625 INCHES NOMINAL OVERALL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
flange_diameter0.875 INCHES NOMINAL IN
flange_thickness0.432 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
nominal_thread_size0.312 INCHES IN
cross-sectional_shapeROUND OVERALL
NSN5310-01-197-2574
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: X70971 PIECE 21 · 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
•
NUT LENGTH: 0.750 INCHES NOMINAL IN
•
NUT STYLE: SLEEVE
•
FLANGE DIAMETER: 0.875 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.432 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 18
•
CROSS-SECTIONAL SHAPE: ROUND OVERALL
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
NUT LENGTH0.750 INCHES NOMINAL IN
NUT STYLESLEEVE
FLANGE DIAMETER0.875 INCHES NOMINAL IN
FLANGE THICKNESS0.432 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH18
CROSS-SECTIONAL SHAPEROUND OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.625 INCHES NOMINAL OVERALL IN
NUT DIAMETER0.618 INCHES MINIMUM AND 0.622 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
5985PL1370018Interchangeable
interchangeable cross-reference
interchangeable
8518028Interchangeable
interchangeable cross-reference
interchangeable
MA1429AInterchangeable
interchangeable cross-reference
interchangeable
5467946Interchangeable
interchangeable cross-reference
interchangeable
5005-08NInterchangeable
interchangeable cross-reference
interchangeable
502758-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is X70971 PIECE 21?
X70971 PIECE 21 is a NUT,SLEEVE.
What parts can replace X70971 PIECE 21?
There are 7 known substitutes for X70971 PIECE 21: 5985PL1370018, 8518028, MA1429A and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for X70971 PIECE 21?
X70971 PIECE 21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-197-2574. 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