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PT733 — Technical Data Sheet

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Peach · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The NUT,SELF-LOCKING,HEXAGON is a Peach industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.250 INCHES NOMINAL IN, thread_class: 2B, hole_diameter: 1.344 INCHES NOMINAL IN, thread_series: UNF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5310-00-371-6438, 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
PT733
NSN: 5310-00-371-6438
FSC: 5310
CAGE: 77873 — ROCKFORD POWERTRAIN INC DIV POWERTRAIN ROCKFORD, INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.250 INCHES NOMINAL IN
thread_class2B
hole_diameter1.344 INCHES NOMINAL IN
thread_seriesUNF
locking_featureFREE-RUNNING ALL METAL DESIGN
outside_diameter2.875 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats0.688 INCHES NOMINAL IN
nominal_thread_size0.438 INCHES IN
bearing_surface_typeCHAMFERED
NSN5310-00-371-6438
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: PT733 · Peach ⚠ 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
•
OUTSIDE DIAMETER: 2.875 INCHES NOMINAL IN
•
HOLE DIAMETER: 1.344 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1020 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER2.875 INCHES NOMINAL IN
HOLE DIAMETER1.344 INCHES NOMINAL IN
MATERIALSTEEL COMP 1020 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
PD195InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
PT521InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
PB195InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
207-232InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
3N45InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
ST105InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PT733?
PT733 is a NUT,SELF-LOCKING,HEXAGON manufactured by Peach.
What parts can replace PT733?
There are 9 known substitutes for PT733: PD195, PT521, PB195 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PT733?
PT733 is cataloged in the Federal Logistics Information System under NSN 5310-00-371-6438. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026