PartsTable
Technical Data Sheet
Download PDF

BACS21EE3W — STUD ASSEMBLY,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

BACS21EE3W: STUD ASSEMBLY,TURNLOCK FASTENER.

STUD ASSEMBLY,TURNLOCK FASTENER. Key specifications include material: STEEL OVERALL, head_length: 0.700 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN, eyelet_length: 0.322 INCHES NOMINAL IN, stud_head_height: 0.360 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, stud_assembly_style: STUD ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-298-7003, 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
BACS21EE3W
NSN: 5325-00-298-7003
FSC: 5325 — Fastening Devices
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_length0.700 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN
eyelet_length0.322 INCHES NOMINAL IN
stud_head_height0.360 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
stud_assembly_styleSTUD ASSEMBLY
eyelet_outside_diameter0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
turnlock_stud_head_styleFLAT FILLISTER WING
material_accommodated_thickness0.060 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
distance_from_engaging_member_to_largest_bearing_surface_of_head0.602 INCHES MINIMUM AND 0.617 INCHES MAXIMUM IN
NSN5325-00-298-7003
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: BACS21EE3W · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HEAD LENGTH: 0.700 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN
•
EYELET OUTSIDE DIAMETER: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
MATERIAL ACCOMMODATED THICKNESS: 0.060 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
•
STUD HEAD HEIGHT: 0.360 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
•
DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD: 0.602 INCHES MINIMUM AND 0.617 INCHES MAXIMUM IN
•
TURNLOCK STUD HEAD STYLE: FLAT FILLISTER WING
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
HEAD LENGTH0.700 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN
EYELET OUTSIDE DIAMETER0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
MATERIAL ACCOMMODATED THICKNESS0.060 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN
STUD HEAD HEIGHT0.360 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD0.602 INCHES MINIMUM AND 0.617 INCHES MAXIMUM IN
TURNLOCK STUD HEAD STYLEFLAT FILLISTER WING
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIALSTEEL OVERALL
STUD ASSEMBLY STYLESTUD ASSEMBLY
EYELET LENGTH0.322 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 5
BACS21Y3WReference document
Same NSN cross-reference
Reference document — Secondary reference
9M252-3WSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2600-3WSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1126010-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
A220AW03Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy BACS21EE3W?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is BACS21EE3W?
BACS21EE3W is a STUD ASSEMBLY,TURNLOCK FASTENER.
What parts can replace BACS21EE3W?
There are 5 known substitutes for BACS21EE3W: BACS21Y3W, 9M252-3W, 2600-3W and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BACS21EE3W?
BACS21EE3W is cataloged in the U.S. Government catalog under NSN 5325-00-298-7003. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — BACS21EE3W

✓ 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.