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427667 — HOUSING,ANTI-ICING AIR SHUT-OFF

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

427667: HOUSING,ANTI-ICING AIR SHUT-OFF.

HOUSING,ANTI-ICING AIR SHUT-OFF. Key specifications include material: STEEL OVERALL, nut_style: SLOTTED, HEXAGON, nut_height: 1.245 INCHES MINIMUM AND 1.317 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNF, hardness_rating: 90.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-042-7667, 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
427667
NSN: 5310-00-042-7667
NIINs: 000427667, 008427634, 008945551
FSC: 5310 — Nuts and Washers
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSLOTTED, HEXAGON
nut_height1.245 INCHES MINIMUM AND 1.317 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNF
hardness_rating90.0 ROCKWELL B MINIMUM AND 32.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND
precious_materialSILVER
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_across_flats2.175 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
nominal_thread_size1.500 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
NSN5310-00-042-7667
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 427667 · 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
•
WIDTH ACROSS FLATS: 2.250 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.500 INCHES IN
•
NUT HEIGHT: 1.281 INCHES NOMINAL IN
•
NUT STYLE: SLOTTED, HEXAGON
•
THREAD CLASS: 2B
•
THREAD QUANTITY PER INCH: 12
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS2.250 INCHES NOMINAL IN
THREAD SERIESUNF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.500 INCHES IN
NUT HEIGHT1.281 INCHES NOMINAL IN
NUT STYLESLOTTED, HEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH12
MATERIALSTEEL OVERALL
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
SUBSTITUTES & CROSS-REFERENCES 1
FFN836GPBTYPE1STYLE3GRADEAReference document
Same NSN cross-reference
Reference document — Identification reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 427667?
427667 is a HOUSING,ANTI-ICING AIR SHUT-OFF.
What parts can replace 427667?
There is 1 known substitute for 427667: FFN836GPBTYPE1STYLE3GRADEA. Substitute compatibility should be verified for your specific system.
What is the NSN for 427667?
427667 is cataloged in the U.S. Government catalog under NSN 5310-00-042-7667. 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.