What is the maximum allowable working pressure for the Pipe connection with BSPT GZ, stainless steel, M739LMR based on tube OD and wall thickness?

Pipe connection with BSPT GZ, stainless steel, M739LMR . maximum allowable working pressure depends on tube outer diameter (OD) and wall thickness per LET-LOKÂ® M739LMR specification. Because the manufacturerâs pressure table (attachment) defines pressures for each OD Ã wall thickness combination, a specific value can only be given when you provide the tube OD and wall thickness. Material: AISI 316 (stainless steel). Provide tube OD and wall thickness and I will give the exact maximum allowable working pressure from the M739LMR table.

How do I determine the allowable working pressure for the Pipe connection with BSPT GZ, stainless steel, M739LMR for my tube OD and wall thickness?

To determine the allowable working pressure for the Pipe connection with BSPT GZ, stainless steel, M739LMR, use the tube outer diameter (OD) and wall thickness: consult the manufacturerâs pressure-rating table for the LET-LOKÂ® Metric tube fitting type LET-LOKÂ® with external BSPT thread (M739LMR). Find the row matching your tube OD and wall thickness; the table gives the allowable working pressure for AISI 316 material. If your exact tube dimensions arenât listed, interpolate between nearest values or contact the supplier with OD, wall thickness and operating temperature for a precise rating. Ensure the selected pressure also meets applicable codes and includes safety factors for your industry (chemical/petrochemical/pharmaceutical/energy/nuclear/process).

Does Pipe connection with BSPT GZ, stainless steel, M739LMR require temperature-based pressure adjustments?

Pipe connection with BSPT GZ, stainless steel, M739LMR: Yes. temperature affects allowable working pressure. The LET-LOKÂ® metric tube fitting with external BSPT thread is made of AISI 316 and its allowable working pressure is specified based on tube outer diameter and wall thickness; however, these pressure ratings are valid at a reference ambient temperature. As temperature rises, the mechanical strength of stainless steel (AISI 316) decreases, so the allowable working pressure must be reduced according to temperature derating factors provided by the manufacturer or relevant standards. For safe operation, consult the detailed pressure vs. temperature charts or tables in the attachment/manufacturer documentation and apply the appropriate reduction factors for the expected service temperature. If operating at low temperatures, material toughness should be checked but pressure ratings typically remain higher; always verify manufacturer guidance and applicable codes for exact adjustments.

Fitting tube with male thread BSPT, steel stainless, M739LMR

All products, LET-LOK precision connectors/

Additional information

Material	SS – stainless steel

Fitting tube metric type LET-LOK® with a BSPT male thread intended mainly for the chemical, petrochemical and pharmaceutical industry, power generation, nuclear power plants and process engineering. The permissible working pressure is determined on the basis of the outer diameter and the wall thickness of the tube (details in the attachment). Material: steel AISI 316.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
HM-LM739LMR-06-02-SS	Fitting tube 6 mm, 1/8" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-06-04-SS	Fitting tube 6 mm, 1/4" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-06-08-SS	Fitting tube 6 mm, 1/2" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-08-02-SS	Fitting tube 8 mm, 1/8" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-08-04-SS	Fitting tube 8 mm, 1/4" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-08-06-SS	Fitting tube 8 mm, 3/8" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-08-08-SS	Fitting tube 8 mm, 1/2" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-10-04-SS	Fitting tube 10 mm, 1/4" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-10-06-SS	Fitting tube 10 mm, 3/8" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-10-08-SS	Fitting tube 10 mm, 1/2" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-12-04-SS	Fitting tube 12 mm, 1/4" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-12-06-SS	Fitting tube 12 mm, 3/8" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-12-08-SS	Fitting tube 12 mm, 1/2" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-16-08-SS	Fitting tube 16 mm, 1/2" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-18-08-SS	Fitting tube 18 mm, 1/2" BSPT male, SS	-	-	In stock	Enquiry
HM-LM739LMR-20-12-SS	Fitting tube 20 mm, 3/4" BSPT male, SS	-	-	In stock	Enquiry

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Fitting tube metric type LET-LOK® with a BSPT male thread intended mainly for the chemical, petrochemical and pharmaceutical industry, power generation, nuclear power plants and process engineering. The permissible working pressure is determined on the basis of the outer diameter and the wall thickness of the tube (details in the attachment). Material: steel AISI 316.