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738612-2 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

738612-2: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, hole_diameter: 2.551 INCHES MINIMUM AND 2.551 INCHES MINIMUM AND 2.561 INCHES MAXIMUM2.561 INCHES MAXIMUM IN, hardness_rating: 75.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM75.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM, outside_diameter: 2.671 INCHES MINIMUM AND 2.671 INCHES MINIMUM AND 2.681 INCHES MAXIMUM2.681 INCHES MAXIMUM IN, special_features: KEYS BENT 30 DEGREESKEYS BENT 30 DEGREES, style_designator: KEYKEY. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-138-9527, 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
738612-2
NSN: 5310-00-138-9527
FSC: 5310 — Nuts and Washers
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
hole_diameter2.551 INCHES MINIMUM AND 2.551 INCHES MINIMUM AND 2.561 INCHES MAXIMUM2.561 INCHES MAXIMUM IN
hardness_rating75.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM75.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM
outside_diameter2.671 INCHES MINIMUM AND 2.671 INCHES MINIMUM AND 2.681 INCHES MAXIMUM2.681 INCHES MAXIMUM IN
special_featuresKEYS BENT 30 DEGREESKEYS BENT 30 DEGREES
style_designatorKEYKEY
material_thickness0.032 INCHES MINIMUM AND 0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM0.040 INCHES MAXIMUM IN
internal_key_quantity33
internal_straight_key_width0.120 INCHES NOMINAL0.120 INCHES NOMINAL IN
material_document_and_classificationAMS5513 ASSN STD SINGLE MATERIAL RESPONSE OVERALLAMS5513 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_top_of_internal_key1.096 INCHES MINIMUM AND 1.096 INCHES MINIMUM AND 1.101 INCHES MAXIMUM1.101 INCHES MAXIMUM IN
NSN5310-00-138-9527
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 738612-2 · 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
•
INTERNAL STRAIGHT KEY WIDTH: 0.120 INCHES NOMINAL0.120 INCHES NOMINAL IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 1.096 INCHES MINIMUM AND 1.096 INCHES MINIMUM AND 1.101 INCHES MAXIMUM1.101 INCHES MAXIMUM IN
•
HARDNESS RATING: 75.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM75.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM
•
STYLE DESIGNATOR: KEYKEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5513 ASSN STD SINGLE MATERIAL RESPONSE OVERALLAMS5513 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 2.671 INCHES MINIMUM AND 2.671 INCHES MINIMUM AND 2.681 INCHES MAXIMUM2.681 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.032 INCHES MINIMUM AND 0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM0.040 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.120 INCHES NOMINAL0.120 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY1.096 INCHES MINIMUM AND 1.096 INCHES MINIMUM AND 1.101 INCHES MAXIMUM1.101 INCHES MAXIMUM IN
HARDNESS RATING75.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM75.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM
STYLE DESIGNATORKEYKEY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5513 ASSN STD SINGLE MATERIAL RESPONSE OVERALLAMS5513 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER2.671 INCHES MINIMUM AND 2.671 INCHES MINIMUM AND 2.681 INCHES MAXIMUM2.681 INCHES MAXIMUM IN
MATERIAL THICKNESS0.032 INCHES MINIMUM AND 0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM0.040 INCHES MAXIMUM IN
SPECIAL FEATURESKEYS BENT 30 DEGREESKEYS BENT 30 DEGREES
MATERIALSTEEL COMP 304 OVERALL
INTERNAL KEY QUANTITY33
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 738612-2?
738612-2 is a WASHER,KEY.
What is the NSN for 738612-2?
738612-2 is cataloged in the U.S. Government catalog under NSN 5310-00-138-9527. 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.