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B303129 — TRUNION,FLAG BLOCK

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

B303129: TRUNION,FLAG BLOCK.

The TRUNION,FLAG BLOCK is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: STEEL PLATE; APPROX 9.000 IN. LG; 1.875 IN.

THK; 3.435 IN. ID IN. This part is cataloged in the U.S.

Government catalog under NSN 3950-01-257-4932, 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
B303129
NSN: 3950-01-257-4932
FSC: 3950 — Winches, Hoists, Cranes, and Derricks
CAGE: 3X894 — CONTROL FLOW, INC. DBA CONTROL FLOW INC (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL PLATE; APPROX 9.000 IN. LG; 1.875 IN. THK; 3.435 IN. ID IN
NSN3950-01-257-4932
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRUNION,FLAG BLOCK TITLE COMPONENT PN B303129 MFR TRUNION,FLAG BLOCK
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL PLATE; APPROX 9.000 IN. LG; 1.875 IN. THK; 3.435 IN. ID IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL PLATE; APPROX 9.000 IN. LG; 1.875 IN. THK; 3.435 IN. ID IN
OTHER ITEMS IN FSC 3950 — Winches, Hoists, Cranes, and Derricks
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3950-00-001-1249 3950-00-001-3984 3950-00-001-6303 3950-00-001-6304 3950-00-001-6312 3950-00-001-6313 3950-00-001-7831 3950-00-001-7834
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is B303129?
B303129 is a TRUNION,FLAG BLOCK.
What is the NSN for B303129?
B303129 is cataloged in the U.S. Government catalog under NSN 3950-01-257-4932. 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.