PartsTable
Technical Data Sheet
88-291 ✓ Verified by PartsTable
· 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

WRENCH,BOX AND OPEN END,COMBINAT. Key specifications include material: STEEL OVERALL, head_angle: 15.0 DEGREES NOMINAL, overall_length: 4.130 INCHES MINIMUM AND 5.120 INCHES MAXIMUM IN, style_designator: OFFSET, surface_treatment: CHROMIUM OVERALL, wrenching_surface_size: 0.344 INCHES NOMINAL BOTH ENDS IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-046-3910, 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
88-291
NSN: 5310-01-046-3910
FSC: 5310
CAGE: 35301 — DRESSER INDUSTRIES INC LEROI DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_angle15.0 DEGREES NOMINAL
overall_length4.130 INCHES MINIMUM AND 5.120 INCHES MAXIMUM IN
style_designatorOFFSET
surface_treatmentCHROMIUM OVERALL
wrenching_surface_size0.344 INCHES NOMINAL BOTH ENDS IN
wrenching_surface_shape12 POINT SECOND END INTERNAL
wrenching_end_offset_angle15.0 DEGREES NOMINAL
nondefinitive_spec/std_data2 TYPE AND 4 CLASS AND B STYLE
specification/standard_data0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN5310-01-046-3910
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 88-291 · 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
BEARING SURFACE TYPE: CHAMFERED
NUT STYLE: HEXAGON
THREAD DIRECTION: RIGHT-HAND
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
THREAD QUANTITY PER INCH: 16
NOMINAL THREAD SIZE: 0.750 INCHES IN
MATERIAL: PLASTIC POLYAMIDE NYLON LOCKING INSERT
TECHNICAL CHARACTERISTICS (FLIS)
BEARING SURFACE TYPECHAMFERED
NUT STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
THREAD QUANTITY PER INCH16
NOMINAL THREAD SIZE0.750 INCHES IN
MATERIALPLASTIC POLYAMIDE NYLON LOCKING INSERT
MATERIALSTEEL COMP 1137 NUT
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
WIDTH ACROSS FLATS1.045 INCHES MINIMUM AND 1.067 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
C772Interchangeable
interchangeable cross-reference
interchangeable
SA-1048-382Interchangeable
interchangeable cross-reference
interchangeable
240-2697-010Interchangeable
interchangeable cross-reference
interchangeable
C0772JInterchangeable
interchangeable cross-reference
interchangeable
NGM0010060064146Interchangeable
interchangeable cross-reference
interchangeable
8823PC8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 88-291?
88-291 is a WRENCH,BOX AND OPEN END,COMBINAT.
What parts can replace 88-291?
There are 14 known substitutes for 88-291: C772, SA-1048-382, 240-2697-010 and 11 more. Substitute compatibility should be verified for your specific system.
Is 88-291 still available?
88-291 is currently cancelled.
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