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Technical Data Sheet
PartsTable / COMPONENT / 20-34199-3
20-34199-3 ✓ 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,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: STRIP, nut_width: 0.312 INCHES NOMINAL IN, nut_length: 1.375 INCHES NOMINAL IN, thread_class: 2B, hole_diameter: 0.194 INCHES MINIMUM AND 0.201 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-588-0979, 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
20-34199-3
NSN: 5310-00-588-0979
FSC: 5310
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleSTRIP
nut_width0.312 INCHES NOMINAL IN
nut_length1.375 INCHES NOMINAL IN
thread_class2B
hole_diameter0.194 INCHES MINIMUM AND 0.201 INCHES MAXIMUM IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
overall_height0.075 INCHES NOMINAL IN
outside_diameter0.650 INCHES NOMINAL IN
style_designatorSPRING TENSION
thread_directionRIGHT-HAND
aperture_quantity2
NSN5310-00-588-0979
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 20-34199-3 · 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
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
•
THREAD CLASS: 2B
•
THREAD DIRECTION: RIGHT-HAND
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATING MEMBER DIAMETER ACCOMMODATED: 0.164 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 32
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.164 INCHES IN
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATING MEMBER DIAMETER ACCOMMODATED0.164 INCHES NOMINAL IN
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
THREAD QUANTITY PER INCH32
NUT WIDTH0.312 INCHES NOMINAL IN
NUT LENGTH1.375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
20-34199-3Interchangeable
interchangeable cross-reference
interchangeable
5716-5Interchangeable
interchangeable cross-reference
interchangeable
5716Interchangeable
interchangeable cross-reference
interchangeable
367Interchangeable
interchangeable cross-reference
interchangeable
TR716-05Interchangeable
interchangeable cross-reference
interchangeable
VS770Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20-34199-3?
20-34199-3 is a WASHER,SPRING TENSION.
What parts can replace 20-34199-3?
There are 9 known substitutes for 20-34199-3: 20-34199-3, 5716-5, 5716 and 6 more. Substitute compatibility should be verified for your specific system.
Is 20-34199-3 still available?
20-34199-3 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026