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1B4437 — PLATE,ACFT ENGINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1B4437: PLATE,ACFT ENGINE.

The PLATE,ACFT ENGINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: CASTELLATED, HEXAGON, nut_height: 0.328 INCHES NOMINAL IN, thread_series: UNF, thread_direction: RIGHT-HAND, width_across_flats: 0.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-076-1508, 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
1B4437
NSN: 5310-00-076-1508
NIINs: 000761508, 013991273
FSC: 5310 — Nuts and Washers
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleCASTELLATED, HEXAGON
nut_height0.328 INCHES NOMINAL IN
thread_seriesUNF
thread_directionRIGHT-HAND
width_across_flats0.500 INCHES NOMINAL IN
nominal_thread_size0.312 INCHES IN
bearing_surface_typeWASHER FACED
drilled_hole_diameter0.078 INCHES NOMINAL IN
hole_type_and_quantity1 DRILLED
thread_pitch_diameters+0.2854 TO 0.2878 INCHES IN
hole_configuration_styleCONFIGURATION A
NSN5310-00-076-1508
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1B4437 · 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: 0.500 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
HOLE CONFIGURATION STYLE: CONFIGURATION A
•
THREAD PITCH DIAMETERS: +0.2854 TO 0.2878 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
NUT HEIGHT: 0.328 INCHES NOMINAL IN
•
DRILLED HOLE DIAMETER: 0.078 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
THREAD SERIESUNF
HOLE CONFIGURATION STYLECONFIGURATION A
THREAD PITCH DIAMETERS+0.2854 TO 0.2878 INCHES IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.312 INCHES IN
NUT HEIGHT0.328 INCHES NOMINAL IN
DRILLED HOLE DIAMETER0.078 INCHES NOMINAL IN
NUT STYLECASTELLATED, HEXAGON
THREAD QUANTITY PER INCH24
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1B4437?
1B4437 is a PLATE,ACFT ENGINE.
What is the NSN for 1B4437?
1B4437 is cataloged in the U.S. Government catalog under NSN 5310-00-076-1508. 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.