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50FMP20-440 — NUT,SELF-LOCKING,CLINCH

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

50FMP20-440: NUT,SELF-LOCKING,CLINCH.

The NUT,SELF-LOCKING,CLINCH is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: CLINCH, nut_height: 0.206 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN, lubrication: SOLUBLE LUBRICANT, pilot_length: 0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN, thread_class: 3B. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-809-3581, 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
50FMP20-440
NSN: 5310-00-809-3581
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleCLINCH
nut_height0.206 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN
lubricationSOLUBLE LUBRICANT
pilot_length0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNJC
pilot_diameter0.168 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
width_across_flats0.181 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN
nominal_thread_size0.112 INCHES IN
NSN5310-00-809-3581
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 50FMP20-440 · 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
•
LUBRICATION: SOLUBLE LUBRICANT
•
WIDTH ACROSS FLATS: 0.181 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN
•
THREAD SERIES: UNJC
•
MATERIAL DOCUMENT AND CLASSIFICATION: CQMP 18-8 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NUT COUNTERBORE DEPTH: 0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM NUT IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.112 INCHES IN
•
COUNTERBORE DIAMETER: 0.133 INCHES MINIMUM AND 0.136 INCHES MAXIMUM NUT IN
TECHNICAL CHARACTERISTICS
LUBRICATIONSOLUBLE LUBRICANT
WIDTH ACROSS FLATS0.181 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN
THREAD SERIESUNJC
MATERIAL DOCUMENT AND CLASSIFICATIONCQMP 18-8 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
NUT COUNTERBORE DEPTH0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM NUT IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.112 INCHES IN
COUNTERBORE DIAMETER0.133 INCHES MINIMUM AND 0.136 INCHES MAXIMUM NUT IN
PILOT DIAMETER0.168 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
PILOT LENGTH0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 50FMP20-440?
50FMP20-440 is a NUT,SELF-LOCKING,CLINCH.
What is the NSN for 50FMP20-440?
50FMP20-440 is cataloged in the U.S. Government catalog under NSN 5310-00-809-3581. This indicates validated use in U.S. government and defense supply chains.
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