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127778 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

127778: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 2.375 INCHES NOMINAL IN, thread_class: 2B LEFT INTERNAL (INCLUDES THRU THREAD), thread_length: 0.375 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN, flange_thickness: 2.000 INCHES NOMINAL IN, style_designator: FLANGED WITH LEFT INTERNAL THREAD, thread_direction: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD). This part is cataloged in the U.S.

Government catalog under NSN 5310-00-012-7778, 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
127778
NSN: 5310-00-012-7778
NIINs: 000127778, 002078019
FSC: 5310 — Nuts and Washers
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
length2.375 INCHES NOMINAL IN
thread_class2B LEFT INTERNAL (INCLUDES THRU THREAD)
thread_length0.375 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
flange_thickness2.000 INCHES NOMINAL IN
style_designatorFLANGED WITH LEFT INTERNAL THREAD
thread_directionRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
surface_treatmentCADMIUM STANDOFF
nominal_thread_size0.250 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
thread_quantity_per_inch20 LEFT INTERNAL (INCLUDES THRU THREAD)
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
flange_width_across_flats0.312 INCHES NOMINAL IN
NSN5310-00-012-7778
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 127778 · 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
•
PLATE THICKNESS: 0.047 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
PLATE WIDTH: 0.750 INCHES NOMINAL IN
•
GRIPPING PRONG LENGTH: 0.078 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
GRIPPING PRONG QUANTITY: 3
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.047 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
PLATE WIDTH0.750 INCHES NOMINAL IN
GRIPPING PRONG LENGTH0.078 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
GRIPPING PRONG QUANTITY3
NOMINAL THREAD SIZE0.190 INCHES IN
NUT HEIGHT0.316 INCHES NOMINAL IN
SPECIAL FEATURES3 MTG HOLES SPACED 120 DEG APART ON 0.297 IN. RADIUS IN
SUBSTITUTES & CROSS-REFERENCES 1
48442CReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 127778?
127778 is a STANDOFF,THREADED,SPACING.
What parts can replace 127778?
There is 1 known substitute for 127778: 48442C. Substitute compatibility should be verified for your specific system.
What is the NSN for 127778?
127778 is cataloged in the U.S. Government catalog under NSN 5310-00-012-7778. This indicates validated use in U.S. government and defense supply chains.
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