Product Specification
Allen CSK (INCHES)
lS: 6761, DIN : 7991 · Metric: M4-M20 mm · Inches: BSW / BSF inches · Class 10.9
Product Image
Overview
Engineered for demanding OEM and industrial applications, our Allen CSK Screws are manufactured to deliver precision, strength, and consistent performance at scale. Featuring a flush countersunk head and high-precision internal hex socket, they are designed for secure, space-efficient assembly where dimensional accuracy and dependable fastening are critical. Manufactured under stringent quality controls to ensure reliable, batch-to-batch consistency.
Size
Thread Tolerance
Threads will conform to the Medium Class of BS : 84 for BSW & BSF threads.
Technical Details
|
Dimension |
Description |
3/16 |
1/4 |
5/16 |
3/8 |
1/2 |
5/8 |
3/4 |
|
T.P.I. (BSW) |
Threads Per Inch (Coarse) |
24 |
20 |
18 |
16 |
12 |
11 |
10 |
|
T.P.I. (BSF) |
Threads Per Inch (Fine) |
32 |
26 |
22 |
20 |
16 |
14 |
12 |
|
A Max. |
Head Diameter |
0.356 |
0.475 |
0.594 |
0.712 |
0.95 |
1.187 |
1.425 |
|
F Min. |
Fillet |
0.065 |
0.085 |
0.105 |
— |
— |
— |
— |
|
H Min. |
Socket Depth |
0.085 |
0.113 |
0.142 |
0.168 |
0.225 |
0.281 |
0.337 |
|
R Ref. |
Radius |
0.025 |
0.025 |
0.025 |
— |
— |
— |
— |
|
W Nom. |
Socket Size |
3/32 |
5/32 |
3/16 |
0.221 |
0.316 |
0.379 |
0.379 |
|
L Max. |
Thread Length |
1" |
1 1/4" |
1 1/4" |
— |
— |
— |
— |
Standards
lS: 6761
DIN : 7991
Property Class
10.9
Material
JSW, Usha Martin, Tata Steels, Bhushan Steels
Finish Options
Auto Black
Zinc Plated
Golden plated & as per customer requirement
Series Available
Metric: M4-M20
Inches: BSW / BSF
Proforma invoice within 48 hrs · SGS / BV
inspection on request