Covid-19 Update – We are fully open for business – Read More>

Length Bar Tolerances Metric & Imperial

Back to Data Sheets

BS 5317 – Metric Length Bar Grades and Tolerances

BS 5317 - Metric Length Bar Grades and Tolerances
Size mm up to (mm)Grade 1
(µm)
Grade 2
(µm)
FlatnessParallelismLengthFlatnessParallelismLength
250.150.160.20.250.30.4
500.150.180.40.250.30.5
750.150.180.40.250.350.7
1000.180.20.50.250.350.8
1250.180.20.60.250.40.9
1500.180.20.60.250.41
1750.20.250.70.250.41.1
2000.20.250.80.250.41.2
2250.20.250.80.250.41.2
2500.20.250.80.250.41.2
2750.20.250.80.250.41.2
3000.20.250.80.250.41.2
3750.20.351.40.250.52.1
4000.20.351.40.250.52.2
5000.20.351.40.250.52.2
5750.20.420.250.73.1
6000.20.42.10.250.73.2
7000.20.42.10.250.73.2
7750.20.52.60.250.84.1

Please Note:
1 Grades 1 & 2 bars have M10 x 1.5 threaded connecting holes except for the 10mm which has a plain hole

 

BS1790 – Inch Length Bar Grades and Tolerances

BS1790 - Inch Length Bar Grades and Tolerances
Size up to (inch)Grade Inspection
(µ inch)
Grade Workshop
(µ inch)
FlatnessParallelismLengthFlatnessParallelismLength
15507100
255771010
37710101510
47720101520
571020101520
671020101530
771030101530
871030101540
9---
10---
11---
12---
1572060102070
18---
23720901025110

Please Note:
1. Grades Inspection & Workshop have 3/8” BSW threaded connecting holes except for the 0.5” which has a plain hole
2. Intermediate size bars are made to the same tolerances as the next larger size

 



Download the Data Sheet Download Here

Get in touch

Please complete all fields below.

  • This field is for validation purposes and should be left unchanged.

Contact Details

Email
Phone

Phone: +44(0) 1536 204681
Fax: +44(0) 1536 205272

Address
Unit 15 Maylan Road
Earlstrees Industrial Estate
Corby
NN17 4DR
Opening Times

Monday: 08:00 - 17:00
Tuesday: 08:00 - 17:00
Wednesday: 08:00 - 17:00
Thursday: 08:00 - 17:00
Friday: 08:00 - 13:00
Saturday: Closed
Sunday: Closed