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Technical Data Sheet
PartsTable / COMPONENT / SG2572PC76
SG2572PC76 ✓ 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

The WASHER,KEY is a the manufacturer industrial component. Key specifications include hole_diameter: 1.583 INCHES MINIMUM AND 1.603 INCHES MAXIMUM IN, hardness_rating: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM, outside_diameter: 2.000 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.053 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN, external_key_quantity: 15. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-186-0967, 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
SG2572PC76
NSN: 5310-00-186-0967
FSC: 5310
CAGE: 16712 — SIEMENS ENERGY, INC. (USA)
SPECIFICATIONS
hole_diameter1.583 INCHES MINIMUM AND 1.603 INCHES MAXIMUM IN
hardness_rating50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
outside_diameter2.000 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.053 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
external_key_quantity15
external_prebent_key_width0.219 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
internal_prebent_key_width0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
internal_prebent_key_length0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
overall_distance_including_keys2.469 INCHES MAXIMUM IN
material_document_and_classificationFED STD 66 FED STD ALL MATERIAL RESPONSES OVERALL
NSN5310-00-186-0967
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SG2572PC76 · 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
•
EXTERNAL KEY QUANTITY: 15
•
STYLE DESIGNATOR: KEY
•
INTERNAL PREBENT KEY LENGTH: 0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
HOLE DIAMETER: 1.583 INCHES MINIMUM AND 1.603 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 2.469 INCHES MAXIMUM IN
•
HARDNESS RATING: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
•
MATERIAL THICKNESS: 0.053 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66 FED STD ALL MATERIAL RESPONSES OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
EXTERNAL KEY QUANTITY15
STYLE DESIGNATORKEY
INTERNAL PREBENT KEY LENGTH0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
HOLE DIAMETER1.583 INCHES MINIMUM AND 1.603 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS2.469 INCHES MAXIMUM IN
HARDNESS RATING50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
MATERIAL THICKNESS0.053 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66 FED STD ALL MATERIAL RESPONSES OVERALL
EXTERNAL PREBENT KEY WIDTH0.219 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
INTERNAL PREBENT KEY WIDTH0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
2D1959Interchangeable
interchangeable cross-reference
interchangeable
GE623Interchangeable
interchangeable cross-reference
interchangeable
3203Interchangeable
interchangeable cross-reference
interchangeable
6249Interchangeable
interchangeable cross-reference
interchangeable
38331Interchangeable
interchangeable cross-reference
interchangeable
1B3927Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SG2572PC76?
SG2572PC76 is a WASHER,KEY.
What parts can replace SG2572PC76?
There are 27 known substitutes for SG2572PC76: 2D1959, GE623, 3203 and 24 more. Substitute compatibility should be verified for your specific system.
Is SG2572PC76 still available?
SG2572PC76 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026