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Technical Data Sheet
PartsTable / COMPONENT / 138608
138608 ✓ 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 CLUTCH,SPRAG is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_height: 0.312 INCHES NOMINAL IN, thread_class: 2A EXTERNAL A, overall_length: 0.812 INCHES NOMINAL IN, connection_style: PLAIN, style_designator: PLUG, MACHINE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-011-4617, 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
138608
NSN: 5310-00-011-4617
FSC: 5310
CAGE: 81996 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_height0.312 INCHES NOMINAL IN
thread_class2A EXTERNAL A
overall_length0.812 INCHES NOMINAL IN
connection_stylePLAIN
style_designatorPLUG, MACHINE
thread_directionRIGHT-HAND EXTERNAL
nominal_thread_size0.688 INCHES EXTERNAL IN
washer_face_diameter0.844 INCHES NOMINAL IN
washer_face_thickness0.125 INCHES NOMINAL IN
thread_quantity_per_inch16 EXTERNAL
thread_series_designatorUN EXTERNAL
NSN5310-00-011-4617
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 138608 · 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
•
STYLE DESIGNATOR: COUNTERSINK EXTERNAL TEETH
•
MATERIAL: STEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: -QQ-S-633 CANC FED SPEC 1ST MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 2ND MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 3RD MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 4TH MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 5TH MATERIAL RESPONSE OVERALL
•
NONDEFINITIVE SPEC/STD DATA: C TYPE
•
COUNTERSINK ANGLE: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
•
MATERIAL THICKNESS: 0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.318 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCOUNTERSINK EXTERNAL TEETH
MATERIALSTEEL COMP 1060 OR STEEL COMP 1065 OR STEEL COMP 1070 OR STEEL COMP 1075 OR STEEL COMP 1080 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION-QQ-S-633 CANC FED SPEC 1ST MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 2ND MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 3RD MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 4TH MATERIAL RESPONSE OR -QQ-S-633 CANC FED SPEC 5TH MATERIAL RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATAC TYPE
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
MATERIAL THICKNESS0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
HOLE DIAMETER0.318 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
OUTSIDE DIAMETER0.599 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
1234582Interchangeable
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114614Interchangeable
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7416548Interchangeable
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21633Interchangeable
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114618Interchangeable
interchangeable cross-reference
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BEAX4GInterchangeable
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LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 138608?
138608 is a CLUTCH,SPRAG.
What parts can replace 138608?
There are 20 known substitutes for 138608: 1234582, 114614, 7416548 and 17 more. Substitute compatibility should be verified for your specific system.
Is 138608 still available?
138608 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026