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Technical Data Sheet
PartsTable / COMPONENT / B-1211
B-1211 ✓ 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

SPILL CONTAINMENT UNIT,HAZARDOUS. Key specifications include height: 1.000 FEET FT, material: STEEL OVERALL, nut_style: CAP, body_style: PLAIN, SOLID, nut_height: 1.186 INCHES NOMINAL IN, teeth_type: STRAIGHT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-569-0997, 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
B-1211
NSN: 5310-00-569-0997
FSC: 5310
CAGE: 96101 — GAS EQUIPMENT ENGINEERING CORPORATION, THE DBA GEECO (USA)
SPECIFICATIONS
height1.000 FEET FT
materialSTEEL OVERALL
nut_styleCAP
body_stylePLAIN, SOLID
nut_height1.186 INCHES NOMINAL IN
teeth_typeSTRAIGHT
corner_shapeSQUARE ALL CORNERS
thread_class2B
overall_width12.000 FEET FT
thread_seriesUNF
overall_length12.000 FEET FT
pressure_angle14.5000 DEGREES
NSN5310-00-569-0997
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: B-1211 · 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
•
WIDTH ACROSS FLATS: 0.750 INCHES NOMINAL IN
•
BEARING SURFACE TYPE: WASHER FACED
•
THREAD QUANTITY PER INCH: 20
•
NOMINAL THREAD SIZE: 0.507 INCHES IN
•
THREAD SERIES: UNF
•
THREAD DIRECTION: RIGHT-HAND
•
NUT HEIGHT: 1.186 INCHES NOMINAL IN
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS0.750 INCHES NOMINAL IN
BEARING SURFACE TYPEWASHER FACED
THREAD QUANTITY PER INCH20
NOMINAL THREAD SIZE0.507 INCHES IN
THREAD SERIESUNF
THREAD DIRECTIONRIGHT-HAND
NUT HEIGHT1.186 INCHES NOMINAL IN
THREAD CLASS2B
NUT STYLECAP
MATERIALCOPPER ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
B1-211Interchangeable
interchangeable cross-reference
interchangeable
16610062-001Interchangeable
interchangeable cross-reference
interchangeable
F111Interchangeable
interchangeable cross-reference
interchangeable
5120PL1037091Interchangeable
interchangeable cross-reference
interchangeable
AS954Interchangeable
interchangeable cross-reference
interchangeable
B-040408-SUInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-1211?
B-1211 is a SPILL CONTAINMENT UNIT,HAZARDOUS.
What parts can replace B-1211?
There are 10 known substitutes for B-1211: B1-211, 16610062-001, F111 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B-1211?
B-1211 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-569-0997. 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