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122531 — COLLAR,SHAFT

✓ Government record, cited
Hama · NUT WASHER
PRODUCT OVERVIEW

122531: COLLAR,SHAFT.

The COLLAR,SHAFT is a Hama industrial component. Key specifications include radius: 0.125 INCHES NOMINAL IN, material: ALUMINUM ALLOY, thickness: 1.000 INCHES NOMINAL IN, bore_diameter: 0.9062 INCHES NOMINAL IN, outside_diameter: 2.000 INCHES NOMINAL IN, style_designator: ROUND W/ SINGLE EDGE. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-012-2531, 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
122531
NSN: 5310-00-012-2531
NIINs: 000122531, 001582744
FSC: 5310 — Nuts and Washers
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
radius0.125 INCHES NOMINAL IN
materialALUMINUM ALLOY
thickness1.000 INCHES NOMINAL IN
bore_diameter0.9062 INCHES NOMINAL IN
outside_diameter2.000 INCHES NOMINAL IN
style_designatorROUND W/ SINGLE EDGE
securing_hole_quantity2
end_item_identificationCOOPER AIR TOOLS,P1 SERIES
hole_diameter_and_location0.1875 INCHES NOMINAL ALL HOLES IN
securing_hole_type_and_locationUNTHREADED ALL HOLES
angle_between_centerlines_of_securing_holes_in_deg180.0
NSN5310-00-012-2531
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 122531 · Hama ⚠ 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
•
WIDTH ACROSS FLATS: 0.563 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
NUT HEIGHT: 0.406 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
NUT STYLE: CASTELLATED, HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.563 INCHES NOMINAL IN
THREAD SERIESUNF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
NUT HEIGHT0.406 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
NUT STYLECASTELLATED, HEXAGON
THREAD CLASS3B
THREAD QUANTITY PER INCH24
SUBSTITUTES & CROSS-REFERENCES 1
FFB571TYPEAReference document
Same NSN cross-reference
Reference document — Identification reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 122531?
122531 is a COLLAR,SHAFT manufactured by Hama.
What parts can replace 122531?
There is 1 known substitute for 122531: FFB571TYPEA. Substitute compatibility should be verified for your specific system.
What is the NSN for 122531?
122531 is cataloged in the U.S. Government catalog under NSN 5310-00-012-2531. 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.