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PartsTable / COMPONENT / AN950-7
AN950-7 ✓ 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,CONCAVE is a the manufacturer industrial component. Key specifications include radius: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN, hole_diameter: 0.500 INCHES NOMINAL IN, surface_finish: 63.0 MICROINCHES ALL SURFACES, hardness_rating: 70.0 ROCKWELL B MINIMUM AND 86.0 ROCKWELL B MAXIMUM, recess_diameter: 0.688 INCHES NOMINAL IN, outside_diameter: 1.250 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-167-0734, 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
AN950-7
NSN: 5310-00-167-0734
FSC: 5310
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
radius0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
materialSTEEL OR STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1025 OVERALL
hole_diameter0.500 INCHES NOMINAL IN
surface_finish63.0 MICROINCHES ALL SURFACES
hardness_rating70.0 ROCKWELL B MINIMUM AND 86.0 ROCKWELL B MAXIMUM
recess_diameter0.688 INCHES NOMINAL IN
outside_diameter1.250 INCHES NOMINAL IN
style_designatorCONCAVE
surface_treatmentCADMIUM OR ZINC OVERALL
material_thickness0.125 INCHES NOMINAL IN
material_document_and_classificationQQ-S-630 FED SPEC ALL MATERIAL RESPONSES OR QQ-S-698 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-700 FED SPEC ALL MATERIAL RESPONSES OR AISI ASSN STD ALL MATERIAL RESPONSES OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 1,CL 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL
NSN5310-00-167-0734
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AN950-7 · 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 THICKNESS: 0.125 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
MATERIAL: STEEL OR STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1025 OVERALL
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
STYLE DESIGNATOR: CONCAVE
•
OUTSIDE DIAMETER: 1.250 INCHES NOMINAL IN
•
SURFACE FINISH: 63.0 MICROINCHES ALL SURFACES
•
RECESS DIAMETER: 0.688 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL
MATERIALSTEEL OR STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1025 OVERALL
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
STYLE DESIGNATORCONCAVE
OUTSIDE DIAMETER1.250 INCHES NOMINAL IN
SURFACE FINISH63.0 MICROINCHES ALL SURFACES
RECESS DIAMETER0.688 INCHES NOMINAL IN
HARDNESS RATING70.0 ROCKWELL B MINIMUM AND 86.0 ROCKWELL B MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-630 FED SPEC ALL MATERIAL RESPONSES OR QQ-S-698 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-700 FED SPEC ALL MATERIAL RESPONSES OR AISI ASSN STD ALL MATERIAL RESPONSES OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
W2-F-009 ITEM 34Interchangeable
interchangeable cross-reference
interchangeable
W2-F-009-34Interchangeable
interchangeable cross-reference
interchangeable
6207ARSInterchangeable
interchangeable cross-reference
interchangeable
9457REVAITEM12Interchangeable
interchangeable cross-reference
interchangeable
9507Interchangeable
interchangeable cross-reference
interchangeable
9457REVAITEM124Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN950-7?
AN950-7 is a WASHER,CONCAVE.
What parts can replace AN950-7?
There are 12 known substitutes for AN950-7: W2-F-009 ITEM 34, W2-F-009-34, 6207ARS and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN950-7?
AN950-7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-167-0734. 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