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PartsTable / COMPONENT / 556-5907-1
556-5907-1 ✓ 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 KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, overall_width: 0.0937 INCHES MINIMUM AND 0.0948 INCHES MAXIMUM IN, overall_height: 0.0937 INCHES MINIMUM AND 0.0948 INCHES MAXIMUM IN, overall_length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, shear_strength: 75000 SINGLE POUNDS PER SQUARE INCH, style_designator: PLAIN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-899-5273, 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
556-5907-1
NSN: 5315-00-899-5273
FSC: 5315
CAGE: 11530 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN INFORMATION SYSTEMS & GLOBAL SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
overall_width0.0937 INCHES MINIMUM AND 0.0948 INCHES MAXIMUM IN
overall_height0.0937 INCHES MINIMUM AND 0.0948 INCHES MAXIMUM IN
overall_length0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
shear_strength75000 SINGLE POUNDS PER SQUARE INCH
style_designatorPLAIN
surface_treatmentPASSIVATE OVERALL
starting_edge_shapeSTRAIGHT
nondefinitive_spec/std_data2 TYPE AND 1 STYLE AND C GRADE
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5315-00-899-5273
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 556-5907-1 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 1 STYLE AND C GRADE
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 1 STYLE AND C GRADE
MATERIALSTEEL CORROSION RESISTING OVERALL
END ITEM IDENTIFICATIONW/S: TICONDEROGA CLASS CG (47); RADAR SET, LIGHTWEIGHT 3D (AN/TPS-59); AN/SQQ-89 SURFACE SHIP ASW COMBAT SYSTEM; FMS-KNOX CLASS FF; KIDD CLASS DDG; SPRUANCE CLASS DD (963); SUPPORT EQUIPMENT (SE), B-2 BOMBER; FMS-A7 AIRCRAFT; AIRCRAFT, B-2 BOMBER (ATB)
SURFACE TREATMENTPASSIVATE OVERALL
OVERALL LENGTH0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
OVERALL HEIGHT0.0937 INCHES MINIMUM AND 0.0948 INCHES MAXIMUM IN
SHEAR STRENGTH75000 SINGLE POUNDS PER SQUARE INCH
OVERALL WIDTH0.0937 INCHES MINIMUM AND 0.0948 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
N1104Interchangeable
interchangeable cross-reference
interchangeable
N1103Interchangeable
interchangeable cross-reference
interchangeable
OO-K-220Interchangeable
Same NIIN cross-reference
interchangeable
56-5907-1Interchangeable
Same NIIN cross-reference
interchangeable
AS105932Interchangeable
Same NIIN cross-reference
interchangeable
MS20066-14Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 556-5907-1?
556-5907-1 is a KEY,MACHINE.
What parts can replace 556-5907-1?
There are 6 known substitutes for 556-5907-1: N1104, N1103, OO-K-220 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 556-5907-1?
556-5907-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-899-5273. 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: July 2026