Manufacturing & Distributing Hot Rolled & Bright Steel Bar Worldwide

Bright Drawn Carbon Key Steel
– Flat and Square

 Finish: Bright Drawn


USAKEY – Carbon Key Steel – Colour: Red/Yellow
Bright: BS 46: Part 1: 1958, BS 4235: Part 1: 1972
BS 4235: Part 2: 1977


 

Characteristics:

USAKEY is supplied to dimensions and tolerances stipulated in BS 46: Part 1: 1958 ‘Keys and Keyways’ for imperial sizes and BS 4235: Part 1: 1972 ‘Parallel and Taper Keys’ for metric sizes. All imperial bars are supplied to the chemical analysis 0.45% Carbon maximum, 0.60/1.00% Manganese, whilst metric bars are supplied to 0.42/0.50% Carbon, 0.50/0.80% Manganese.

 

Form of Supply:

Bright Drawn: Zinc and Chromate passivated for protection.
Lengths: 13”
Tensile Strength: 540-700 N/mm²
Small Box: Approximately 1 kg in weight.
Standard Box: Approximately 5 kgs in weight with the exception of small sizes.

 

Tolerances:

 Imperial Flats – Width Thickness
Up to and incl. 3/4 x 1/2 +.002” +.003”
7/8 x 5/8 +.002” +.004”
Over 7/8 x 5/8 Up to 1.1/4 x 7/8 +.003” +.004”
1.1/2 x 1 +.004” +.006”

 

Metric Flats – Width Thickness
8mm x 7mm Up to and incl. 10mm x 8mm -.036mm -.090mm
Over 10mm x 8mm Up to and incl. 16mm x 10mm -.043mm -.090mm
18mm x 11mm -.043mm -.110mm
Over 18mm x 11mm Up to and incl. 28mm x 16mm -.052mm -.110mm
32mm x 18mm -.062mm -.110mm
Over 32mm x 18mm Up to and incl. 50mm x 28mm -.062mm -.130mm

 

Imperial Squares :
Up to and incl. 7/8    +.002”
Over 7/8 Up to and incl. 1.1/4    +.003”
Over 1.1/4”    +.004”

Metric Squares :
4mm Up to and incl. 6mm    -.030mm
Over 6mm Up to and incl. 12mm    -.036mm
16mm    -.043mm

 

Stocked sizes Inches

Squares 13” Lengths Boxed

ins. Sq. 1/8 3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4
No. of lengths in small box 12 10 8 7 4 4 3 2 1 1
No. of lengths in standard box 48 43 36 30 20 15 11 9 7 5

 

Flats 13” Lengths Boxed

ins. 5/16 x 1/4 3/8 x 1/4 7/16 x 5/16 1/2 x 5/16 5/8 x 7/16 3/4 x 1/2 7/8 x 5/8 1 x 3/4
No. of lengths in small box 7 6 4 4 2 2 1 1
No. of lengths in standard box 36 30 21 18 10 8 5 4

 

Squares Boxed Assortment No.1 Imperial

ins. Sq. 1/8 3/16 1/4 5/16 3/8 7/16 1/2 5/8 3/4
No. of lengths in small box 1 1 1 1 1 1 1
No. of lengths in standard box 2 2 3 2 3 2 3 1 1

 

 

Stocked sizes – mm.

Squares 13” Lengths Boxed

mm. Sq. 4 5 6 8 10 12 16
No. of lengths in small box 10 8 7 5 4 3 1
No. of lengths in standard box 50 40 32 30 19 13 7

 

Flats 13” Lengths Boxed

mm. 8 x 7 10 x 8 12 x 8 14 x 9 16 x 10 18 x 11 20 x 12 22 x 14 25 x 14
No. of lengths in small box 5 4 3 3 2 2 2 1 1
No. of lengths in standard box 32 25 19 14 12 9 7 6 5

 

Squares Boxed Assortment No.1 Metric

mm. Sq. 4 5 6 8 10 12 16
No. of lengths in small box 1 1 1 1 1 1
No. of lengths in standard box 8 8 5 5 3 2 2

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