PartsTable
Technical Data Sheet
X721 ✓ 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 INSERT,ELECTRICAL CONNECTOR is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thickness: 0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN, body_style: STRAIGHT SHAPE, ROUND, latch_style: FLAT TURNED-UP END, shank_shape: HEXAGON, hole_diameter: 0.509 INCHES MINIMUM AND 0.529 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-010-6500, 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
X721
NSN: 5310-00-010-6500
FSC: 5310
CAGE: 15586 — CUSHMAN INC A RANSOM CO POBOX 7248 CHARLOTTE NC 28241 7248 (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thickness0.014 INCHES MINIMUM AND 0.016 INCHES MAXIMUM IN
body_styleSTRAIGHT SHAPE, ROUND
latch_styleFLAT TURNED-UP END
shank_shapeHEXAGON
hole_diameter0.509 INCHES MINIMUM AND 0.529 INCHES MAXIMUM IN
notch_diameter0.163 INCHES MINIMUM AND 0.169 INCHES MAXIMUM IN
overall_height0.936 INCHES NOMINAL IN
overall_length5.500 INCHES MINIMUM IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
outside_diameter0.877 INCHES MAXIMUM IN
overall_diameter0.625 INCHES NOMINAL IN
NSN5310-00-010-6500
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: X721 · 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 THICKNESS: 0.099 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA: 1 STYLE AND A CLASS
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
HOLE DIAMETER: 0.509 INCHES MINIMUM AND 0.529 INCHES MAXIMUM IN
OUTSIDE DIAMETER: 0.877 INCHES MAXIMUM IN
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
MATERIAL: STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1071 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.099 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA1 STYLE AND A CLASS
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
HOLE DIAMETER0.509 INCHES MINIMUM AND 0.529 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.877 INCHES MAXIMUM IN
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIALSTEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OR STEEL COMP 1065 OR STEEL COMP 1566 OR STEEL COMP 1069 OR STEEL COMP 1070 OR STEEL COMP 1071 OR STEEL COMP 1572 OR STEEL COMP 1074 OR STEEL COMP 1075 OR STEEL COMP 1078 OR STEEL COMP 1080 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
6-10331Interchangeable
interchangeable cross-reference
interchangeable
62134-12Interchangeable
interchangeable cross-reference
interchangeable
TT50X5Interchangeable
interchangeable cross-reference
interchangeable
X721Interchangeable
interchangeable cross-reference
interchangeable
9150583Interchangeable
interchangeable cross-reference
interchangeable
G10-7115Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is X721?
X721 is a INSERT,ELECTRICAL CONNECTOR.
What parts can replace X721?
There are 22 known substitutes for X721: 6-10331, 62134-12, TT50X5 and 19 more. Substitute compatibility should be verified for your specific system.
Is X721 still available?
X721 is currently cancelled.
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