Yankeefcuking doodle doo

[Charlie]

Need to replace two bolts in an American machine. An M5 screws in about 4mm and then gets stuck, so it's very close. Below is a chart showing the American screw thread gauges..... I mean, what the actual fcuk! How do they make or fix anything over there? Anyone have an idea or and educated guess at which bolts I need?

Cheers, Charlie

Gage and Fractional Sizes	Major diam. (inches)	Clear- ance drill	UNC tpi	Tap drill for UNC	UNF tpi	Tap drill for UNF	UNEF tpi	UNS tpi	Tap drill for UNS	Nut Size

0	0.0600	#52	—	—	80	³⁄₆₄″	—	—	—	⁵⁄₃₂″
1	0.0730	#48	64	#53	72	#53	—	—	#54	⁵⁄₃₂″
2	0.0860	#43	56	#50	64	#50	—	—	—	³⁄₁₆″
3	0.0990	#37	48	#47	56	#45	—	—	—	³⁄₁₆″
4	0.1120	#32	40	#43	48	#42	—	32, 36	#45, #44	¼″
5	0.1250	#30	40	#38	44	#37	—	36	#40	¼″
6	0.1380	#27	32	#36	40	#33	—	36	#34	⁵⁄₁₆″
8	0.1640	#18	32	#29	36	#29	—	30, 40	#30, #28	¹¹⁄₃₂″
10	0.190	#9	24	#26	32	#21		28, 36, 40, 48, 56, 30	#23, #22	³⁄₈″
12	0.216	#2	24	#16	28		32	36, 40, 48, 56	#13	⁷⁄₁₆″

 

[craig]

3/16 UNF

 

[bobthebuilder]

re tap it ,or a fbh

 

[Bri963]

Need to replace two bolts in an American machine. An M5 screws in about 4mm and then gets stuck, so it's very close. Below is a chart showing the American screw thread gauges..... I mean, what the actual fcuk! How do they make or fix anything over there? Anyone have an idea or and educated guess at which bolts I need?

Cheers, Charlie

Gage and Fractional Sizes	Major diam. (inches)	Clear- ance drill	UNC tpi	Tap drill for UNC	UNF tpi	Tap drill for UNF	UNEF tpi	UNS tpi	Tap drill for UNS	Nut Size

0	0.0600	#52	—	—	80	³⁄₆₄″	—	—	—	⁵⁄₃₂″
1	0.0730	#48	64	#53	72	#53	—	—	#54	⁵⁄₃₂″
2	0.0860	#43	56	#50	64	#50	—	—	—	³⁄₁₆″
3	0.0990	#37	48	#47	56	#45	—	—	—	³⁄₁₆″
4	0.1120	#32	40	#43	48	#42	—	32, 36	#45, #44	¼″
5	0.1250	#30	40	#38	44	#37	—	36	#40	¼″
6	0.1380	#27	32	#36	40	#33	—	36	#34	⁵⁄₁₆″
8	0.1640	#18	32	#29	36	#29	—	30, 40	#30, #28	¹¹⁄₃₂″
10	0.190	#9	24	#26	32	#21		28, 36, 40, 48, 56, 30	#23, #22	³⁄₈″
12	0.216	#2	24	#16	28		32	36, 40, 48, 56	#13	⁷⁄₁₆″

What machine?

 

[Lancs Lad]

Imperial they said...bring it back they said...the good old days they said.

 

[6feetdown]

Imperial they said...bring it back they said...the good old days they said.

Yeah what a stupid idea. Metric is way easier

 

[JD450A]

Think, it'll be British Standard Cycle..... which is a twat.

For Reference I think Indespension also still use it on the Jockey wheel locking screw..... I tap those out to M16.

 

[Gecko]

What machine?

and how old?

if it's old (or they want to be difficult), it could be 2BA

2BA works out to be: 4.7mm OD and 31.36 tpi
3/16" UNC works out to be: 4.76mm and 32 tpi

M5x0.8 looks like: 5mm OD and 31.75 tpi

BA size chart

BA size chart, for BA nuts and bolts

maccmodels.co.uk

 

[Lancs Lad]

Think, it'll be British Standard Cycle..... which is a twat.

For Reference I think Indespension also still use it on the Jockey wheel locking screw..... I tap those out to M16.

he'll be onto you..copyright that thread pattern on that trailer

 

[Quattromike]

and how old?

if it's old (or they want to be difficult), it could be 2BA

2BA works out to be: 4.7mm OD and 31.36 tpi
3/16" UNC works out to be: 4.76mm and 32 tpi

M5x0.8 looks like: 5mm OD and 31.75 tpi

BA size chart

BA size chart, for BA nuts and bolts

maccmodels.co.uk

Or BSF or BSW.

 

[Gecko]

Or BSF or BSW.

True. BSF is a possibility as it is also 32 tpi, but BSW is only 24 tpi.

Neither are common on NA gear I think.

If it's got enough meat, I'd re-cut it to M6

 

[Charlie]

What machine?

and how old?

if it's old (or they want to be difficult), it could be 2BA

2BA works out to be: 4.7mm OD and 31.36 tpi
3/16" UNC works out to be: 4.76mm and 32 tpi

M5x0.8 looks like: 5mm OD and 31.75 tpi

BA size chart

BA size chart, for BA nuts and bolts

maccmodels.co.uk

Nought to do with plant. Its a friction feeder for a flow wrapper from around mid 90's. Fully stripped it out and replaced all the innards with a programmable smart relay. One roller is missing it's bolts. Being a shaft, there is not a lot of material for re-tapping. Have bought a few random bolts from the above info and if all else fails, I'll just have to turn a new shaft. Thanks for the input people

 

[JimM]

 

[Charlie]

15+K for a new one, not a chance. All it does is hand a piece of paper out, it's like a printer without the print bit!