High-Strength Aluminum Sleeve 1

Aluminium sleeve for general spacing duty, with the bore and length made to the bolt and the parts it separates.

Key specifications

Material6061-T6 Aluminum Alloy
Installationbolt passes through the sleeve for spacing
StandardGB/T 3191 (aluminium bar), customer drawing
Typical substratebattery packs and lightweight structures
Key inspectionsbore, length, compressive load

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Product overviewOverview

6061-T6 reaches roughly 290–310 MPa tensile and 240–275 MPa yield — well below steel — so wall thickness must be sized from compressive stress, not copied from a steel design. A plain sleeve is a spacer with a load path, so the two things that matter are the bore fit on the bolt and the squareness of the end faces. A bore that is too tight seizes on the bolt and stops the joint from seating; too loose and the sleeve tilts and loads the faces on an edge.

Material: 6061-T6 Aluminum Alloy. The bolt passes through the sleeve to set the spacing.

Key featuresFeatures

Bore fit and face squareness decide whether the joint seats.
Bore, outside diameter and overall length are machined to the joint dimensions rather than to a stock size.
Anodising builds an oxide layer that both resists corrosion and breaks electrical continuity to the steel parts.
Wall thickness is calculated from the compressive stress the aluminium can carry, not carried over from steel proportions.

Typical applicationsApplications

Drone and aerospace frames
Guide bushes on automation
Battery module spacing

Selection notesSelection

State the fit between bore and bolt, not just the bore size; a clearance that suits manual assembly is often too loose for a torque-controlled joint.

Frequently asked questionsFAQ

What bore clearance should a sleeve have?

Enough to slide over the bolt without seizing, but not so much that the sleeve tilts. For torque-controlled joints the clearance should be tight enough to keep the sleeve square under preload.

What matters during installation of the High-Strength Aluminum Sleeve 1?

Pass the bolt through the sleeve to set the spacing. Bore fit and face squareness decide whether the joint seats.

Specifications

Material	6061-T6 Aluminum Alloy
Standard	GB/T 3191 (aluminium bar), customer drawing
Installation	bolt passes through the sleeve for spacing
Typical substrate	battery packs and lightweight structures
Key inspections	bore, length, compressive load

Manufacturing and inspection

Bore, outside diameter, length and wall thickness are sampled by calliper or optical gauge.We recommend a pilot assembly at the actual torque and mating part before locking the process parameters for volume.