BLIND BOLTS (BB)

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Blind Bolts (BB)

BLIND BOLTS™ fasteners are high-strength blind fasteners designed for permanent, one-sided installation in aircraft structures with limited backside access. Commonly used in applications such as wings, fuselage sections, control surfaces, flaps, and spoilers, these blind bolts deliver excellent shear and tensile strength comparable to solid fasteners. The blind bolt design provides reliable clamp-up, vibration resistance, and long-term fatigue performance in critical aerospace assemblies. Manufactured to stringent aerospace quality standards, blind bolts are widely specified for commercial, military, and general aviation applications where structural integrity and installation reliability are essential.

Key Features of Blind Bolts Fasteners
  • Blind Installation – Installs from one side where backside access is limited
  • Structural Strength – Designed for primary load-bearing aerospace applications
  • Positive Locking – Resists loosening under vibration and fatigue loading
  • Consistent Clamp-Up – Delivers repeatable and reliable joint integrity
  • Aerospace-Grade Construction – Engineered for demanding aircraft environments
  • Fatigue Resistant – Optimized for long service life in high-cycle conditions
  • Multiple Configurations – Available in various diameters, grip ranges, and styles
  • Corrosion Protection Options – Finishes compatible with aerospace requirements
  • Certified & Traceable – Manufactured to aerospace quality standards
Core Bolt MaterialSleeve MaterialExpander MaterialHead StyleNominal1st Oversize Shank2nd Oversize Shank
431 Stainless Steel305 Stainless Steel431 Stainless Steel100° FlushBB351BB351.64BB351.32
431 Stainless Steel305 Stainless Steel431 Stainless SteelProtrudingBB352BB352.64BB352.32
A-286A-286431 Stainless Steel100° FlushBB365
A-286A-286431 Stainless SteelProtrudingBB366
A-286A-286431 Stainless Steel100° Flush ReducedBB368
A-286A-286431 Stainless Steel100° FlushBB379
A-286A-286431 Stainless SteelProtrudingBB380
A-286A-286431 Stainless Steel100° Flush ReducedBB381
431 Stainless Steel305 Stainless Steel431 Stainless Steel100° Flush ReducedBB382
A-286A-286A-286ProtrudingBB391BB391.64
17-4PH305 Stainless Steel17-4PH100° FlushBB399
17-4PH305 Stainless Steel17-4PHProtrudingBB402
A-286A-286A-286100° FlushBB445
A-286A-286A-286100° Flush ReducedBB517
A-286A-286431 Stainless SteelProtrudingBB120
A-286305 Stainless Steel17-4PH100° Flush ReducedBB134
A-286A-286A-286100° FlushBB140
431 Stainless SteelAluminum431 Stainless Steel100° FlushBB159
431 Stainless Steel305 Stainless SteelPH13-8Mo100° FlushBB166
431 Stainless Steel305 Stainless SteelPH13-8Mo100° FlushBB167
431 Stainless Steel305 Stainless Steel431 Stainless Steel100° FlushBB363
TitaniumTitaniumTitanium100° FlushBB369
TitaniumTitaniumTitaniumProtrudingBB370
431 Stainless Steel305 Stainless Steel431 Stainless Steel100° Flush ReducedBB371
431 Stainless Steel305 Stainless Steel431 Stainless SteelProtrudingBB386
A-286A-286A-286ProtrudingBB392
431 Stainless Steel305 Stainless Steel17-4PHProtrudingBB420G
431 Stainless Steel305 Stainless Steel431 Stainless Steel100° Flush ReducedBB432
431 Stainless SteelAluminum431 Stainless Steel100° Flush ReducedBB436
A-286A-286A-286156° Flush 3.5DBB437
A-286A-286A-286156° Flush 3.5DBB441
17-4PH305 Stainless Steel17-4PHProtrudingBB444BB444.64BB444.32
PH13-8Mo305 Stainless SteelPH13-8Mo100° FlushBB452
INCONEL®718INCONEL®625INCONEL®718ProtrudingBB456
431 Stainless SteelAluminum431 Stainless Steel100° Flush ReducedBB460
431 Stainless Steel305 Stainless Steel17-4PHProtrudingBB515G
A-286A-286431 Stainless Steel100° FlushBB518
A-286A-286A-286ProtrudingBB569
PH13-8Mo305 Stainless SteelPH13-8Mo100° FlushBB572
431 Stainless Steel305 Stainless Steel17-4PHProtrudingBB575
PH13-8Mo305 Stainless SteelPH13-8Mo100° FlushBB588
INCONEL®718A-286431 Stainless SteelProtrudingBB596
PH13-8MoA-286PH13-8Mo100° FlushBB597
Part # (Nominal)Part # (1st Oversize Shank)Part # (2nd Oversize Shank)Core Bolt MaterialSleeve MaterialExpander MaterialHead Style
BB351BB351.64BB351.32431 Stainless Steel305 Stainless Steel431 Stainless Steel100° Flush
BB352BB352.64BB352.32431 Stainless Steel305 Stainless Steel431 Stainless SteelProtruding
BB365A-286A-286431 Stainless Steel100° Flush
BB366A-286A-286431 Stainless SteelProtruding
BB368A-286A-286431 Stainless Steel100° Flush Reduced
BB379A-286A-286431 Stainless Steel100° Flush
BB380A-286A-286431 Stainless SteelProtruding
BB381A-286A-286431 Stainless Steel100° Flush Reduced
BB382431 Stainless Steel305 Stainless Steel431 Stainless Steel100° Flush Reduced
BB391BB391.64A-286A-286A-286Protruding
BB39917-4PH305 Stainless Steel17-4PH100° Flush
BB40217-4PH305 Stainless Steel17-4PHProtruding
BB445A-286A-286A-286100° Flush
BB517A-286A-286A-286100° Flush Reduced
BB120A-286A-286431 Stainless SteelProtruding
BB134A-286305 Stainless Steel17-4PH100° Flush Reduced
BB140A-286A-286A-286100° Flush
BB159431 Stainless SteelAluminum431 Stainless Steel100° Flush
BB166431 Stainless Steel305 Stainless SteelPH13-8Mo100° Flush
BB167431 Stainless Steel305 Stainless SteelPH13-8Mo100° Flush
BB363431 Stainless Steel305 Stainless Steel431 Stainless Steel100° Flush
BB369TitaniumTitaniumTitanium100° Flush
BB370TitaniumTitaniumTitaniumProtruding
BB371431 Stainless Steel305 Stainless Steel431 Stainless Steel100° Flush Reduced
BB386431 Stainless Steel305 Stainless Steel431 Stainless SteelProtruding
BB392A-286A-286A-286Protruding
BB420G431 Stainless Steel305 Stainless Steel17-4PHProtruding
BB432431 Stainless Steel305 Stainless Steel431 Stainless Steel100° Flush Reduced
BB436431 Stainless SteelAluminum431 Stainless Steel100° Flush Reduced
BB437A-286A-286A-286156° Flush 3.5D
BB441A-286A-286A-286156° Flush 3.5D
BB444BB444.64BB444.3217-4PH305 Stainless Steel17-4PHProtruding
BB452PH13-8Mo305 Stainless SteelPH13-8Mo100° Flush
BB456INCONEL®718INCONEL®625INCONEL®718Protruding
BB460431 Stainless SteelAluminum431 Stainless Steel100° Flush Reduced
BB515G431 Stainless Steel305 Stainless Steel17-4PHProtruding
BB518A-286A-286431 Stainless Steel100° Flush
BB569A-286A-286A-286Protruding
BB572PH13-8Mo305 Stainless SteelPH13-8Mo100° Flush
BB575431 Stainless Steel305 Stainless Steel17-4PHProtruding
BB588PH13-8Mo305 Stainless SteelPH13-8Mo100° Flush
BB596INCONEL®718A-286431 Stainless SteelProtruding
BB597PH13-8MoA-286PH13-8Mo100° Flush