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A51B94007-11 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A51B94007-11: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include recess_angle: 45.0 DEGREES NOMINAL, hole_diameter: 0.757 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN, surface_finish: 125.0 MICROINCHES ALL SURFACES, recess_diameter: 0.890 INCHES MINIMUM AND 0.910 INCHES MAXIMUM IN, outside_diameter: 1.250 INCHES NOMINAL IN, special_features: ONE SIDE CHAMFER 45 DEGREE BY 0.040 IN LG IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-042-1801, 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
A51B94007-11
NSN: 5310-01-042-1801
FSC: 5310 — Nuts and Washers
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
recess_angle45.0 DEGREES NOMINAL
hole_diameter0.757 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN
surface_finish125.0 MICROINCHES ALL SURFACES
recess_diameter0.890 INCHES MINIMUM AND 0.910 INCHES MAXIMUM IN
outside_diameter1.250 INCHES NOMINAL IN
special_featuresONE SIDE CHAMFER 45 DEGREE BY 0.040 IN LG IN
style_designatorRECESSED
material_thickness0.078 INCHES NOMINAL IN
NSN5310-01-042-1801
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A51B94007-11 · 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
•
SURFACE FINISH: 125.0 MICROINCHES ALL SURFACES
•
STYLE DESIGNATOR: RECESSED
•
OUTSIDE DIAMETER: 1.250 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.078 INCHES NOMINAL IN
•
RECESS DIAMETER: 0.890 INCHES MINIMUM AND 0.910 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.757 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN
•
RECESS ANGLE: 45.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
SURFACE FINISH125.0 MICROINCHES ALL SURFACES
STYLE DESIGNATORRECESSED
OUTSIDE DIAMETER1.250 INCHES NOMINAL IN
MATERIAL THICKNESS0.078 INCHES NOMINAL IN
RECESS DIAMETER0.890 INCHES MINIMUM AND 0.910 INCHES MAXIMUM IN
SPECIAL FEATURESONE SIDE CHAMFER 45 DEGREE BY 0.040 IN LG IN
HOLE DIAMETER0.757 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN
RECESS ANGLE45.0 DEGREES NOMINAL
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A51B94007-11?
A51B94007-11 is a WASHER,RECESSED.
What is the NSN for A51B94007-11?
A51B94007-11 is cataloged in the U.S. Government catalog under NSN 5310-01-042-1801. 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.