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GN512HY20 — NUT,SPECIAL

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

GN512HY20: NUT,SPECIAL.

The NUT,SPECIAL is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5310-01-119-6941, 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
GN512HY20
NSN: 5310-01-119-6941
FSC: 5310 — Nuts and Washers
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
Part NumberGN512HY20
NSN5310-01-119-6941
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: GN512HY20 · 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: 1.250-12 UNJF 3B RH THREAD,STEEL 303 ASTM A582,PASSIVATE QQ-P-35,1.990 IN. MIN AND 2.010 IN. MAX OD,1.075 IN. MIN AND 1.095 IN. MAX NUT HEIGHT,6 EQUALLY SPACED LOCKING SPLINES,0.427 IN. MIN AND 0.447 IN. MAX SPLINE DEPTH,MINUS 65 DEG F TO 450 DEG F MAX TEMP RATING IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTION1.250-12 UNJF 3B RH THREAD,STEEL 303 ASTM A582,PASSIVATE QQ-P-35,1.990 IN. MIN AND 2.010 IN. MAX OD,1.075 IN. MIN AND 1.095 IN. MAX NUT HEIGHT,6 EQUALLY SPACED LOCKING SPLINES,0.427 IN. MIN AND 0.447 IN. MAX SPLINE DEPTH,MINUS 65 DEG F TO 450 DEG F MAX TEMP RATING IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is GN512HY20?
GN512HY20 is a NUT,SPECIAL.
What is the NSN for GN512HY20?
GN512HY20 is cataloged in the U.S. Government catalog under NSN 5310-01-119-6941. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.