SS 316 / 316L / 316Ti Studs Manufacturer & Exporter in India

Explore SS 316 / 316L / 316Ti Studs Manufacturer & Exporter in India manufactured for demanding industrial applications with reliable strength, corrosion resistance and compliance with international standards.

-196

Min Temp

870

Max Temp

🌡

870

Suitable for continuous service up to approximately 870°C under typical operating conditions.

⚡

620

Typical tensile strength around 620 MPa depending on product form and heat treatment.

🛡

Very Good

Very Good corrosion resistance in a wide range of industrial environments.

⚖

8

Typical density is approximately 8.0 g/cm³.

Product Overview

What are SS 316 / 316L / 316Ti Studs?

SS 316 / 316L / 316Ti studs are austenitic stainless steel threaded fasteners manufactured from UNS S31600, S31603, and S31635 bar stock conforming to ASTM A276 and ASTM A479. The addition of molybdenum (2-3%) to the standard 18-8 chromium-nickel base delivers significantly improved resistance to chloride pitting and crevice corrosion compared to SS 304, while the low-carbon 316L variant eliminates sensitisation risk in welded assemblies.

SS 316Ti introduces titanium stabilisation (5×C minimum) to prevent intergranular corrosion in the heat-affected zone, making it the preferred choice for high-temperature process piping and chemical plant flanges. All three grades are specified under ASTM A193 B8M for pressure vessel and heat exchanger stud bolt applications, and are widely used across pharmaceutical, marine, food processing, and petrochemical industries worldwide.

Quick Specifications

Material Grades	SS 316 / 316L / 316Ti
UNS Numbers	S31600 / S31603 / S31635
DIN Numbers	1.4401 / 1.4404 / 1.4571
Material Standard	ASTM A276 / ASTM A479
Stud Standard (Metric)	DIN 976-1 / ISO 4032
Stud Standard (Inch)	ASTM A193 B8M / ASME B18.31.2
Thread Form	ISO Metric / UNC / UNF
Diameter Range	M6-M100 / ¼"-4"
Tensile Strength (316)	515 MPa (75 ksi) min
Yield Strength (316)	205 MPa (30 ksi) min
Hardness	Max 35 HRC / 223 HB

? All material certified by NABL-accredited laboratory. PMI and heat traceability available on request.

Complete the Fastener Set

Other SS 316 / 316L / 316Ti Fastener Products Available from RealBolt

RealBolt also manufactures the complete SS 316 / 316L / 316Ti fastener range from certified bar stock per ASTM, including Bolts, Nuts, Screws, Washers, and Threaded Rods in all standard configurations. All SS 316 / 316L / 316Ti fastener types ship with EN 10204 MTC 3.1/3.2 documentation and are available in standard sizes and custom-machined specials.

SS 316 / 316L / 316Ti Bolts

SS 316 / 316L / 316Ti Nuts

SS 316 / 316L / 316Ti Screws

SS 316 / 316L / 316Ti Washers

SS 316 / 316L / 316Ti Threaded Rods

Technical Data

SS 316 / 316L / 316Ti Studs Dimensions, Sizes & Thread Standards

SS 316 / 316L / 316Ti Studs are available in metric M6–M100 and inch ¼″–4″ as standard. Per DIN 976-1 (metric fully threaded and double-end studs) and ASME B18.31.2 (inch). Custom lengths in 5 mm increments. Flange stud bolt sets per ASME B16.5 and ASME B16.47.

Stud Bolt Dimensions - Metric (DIN 976-1)

Size (M)	Pitch (mm)	Thread Length (mm)	Min L (mm)	Max L (mm)	Tolerance
M6	1.0	Full / Double End	20	200	6g
M8	1.25	Full / Double End	25	250	6g
M10	1.5	Full / Double End	30	300	6g
M12	1.75	Full / Double End	35	400	6g
M16	2.0	Full / Double End	40	500	6g
M20	2.5	Full / Double End	50	600	6g
M24	3.0	Full / Double End	60	700	6g
M30	3.5	Full / Double End	80	800	6g
M36	4.0	Full / Double End	100	1000	6g
M42	4.5	Full / Double End	120	1200	6g
M48	5.0	Full / Double End	140	1500	6g
M56	5.5	Full / Double End	160	1800	6g
M64	6.0	Full / Double End	180	2000	6g
M72	6.0	Full / Double End	200	2000	6g
M80	6.0	Full / Double End	220	2500	6g
M100	6.0	Full / Double End	250	3000	6g

Dimensional & Material Standards

Standard	Covers	Thread
DIN 976-1	Metric stud bolts, fully threaded & double-end	Metric
ISO 4032	Hex nuts for stud bolt assemblies	Metric
ASME B18.31.2	Continuous and double-end studs	UNC/UNF
ASME B16.5	Stud bolts for pipe flanges	UNC
ASME B16.47	Large diameter flange stud bolts	UNC
MSS SP-75	High-pressure stud bolt sets	UNC

Material Standard	Requirement
ASTM A193 B8M	Stud bolts - UNS S31600 (316)
ASTM A193 B8ML	Stud bolts - UNS S31603 (316L)
ASTM A276	Bar stock - 316 / 316L / 316Ti
ASTM A479	Bar for pressure vessel use
EN 10204 3.1	Mill test certificate
EN 10204 3.2	TPI-witnessed MTC

Material Chemistry

SS 316 / 316L / 316Ti Chemical Composition

SS 316 / 316L / 316Ti Studs are manufactured from an iron-chromium-nickel alloy with chromium (16–26%), nickel (8–28%), and grade-specific molybdenum additions per ASTM and ASTM A193/A194. Chromium content governs the self-healing passive oxide film; molybdenum (2–6%) enhances chloride pitting resistance; and carbon content determines sensitization risk in welded assemblies.

Chemical Composition per ASTM A276 / EN 10088-3

Element	SS 316 (S31600)	SS 316L (S31603)	SS 316Ti (S31635)
Carbon (C)	0.08% max	0.03% max	0.08% max
Chromium (Cr)	16.0-18.0%	16.0-18.0%	16.0-18.0%
Nickel (Ni)	10.0-14.0%	10.0-14.0%	10.0-14.0%
Molybdenum (Mo)	2.0-3.0%	2.0-3.0%	2.0-3.0%
Titanium (Ti)	-	-	5×C min, 0.70% max
Manganese (Mn)	2.0% max	2.0% max	2.0% max
Silicon (Si)	0.75% max	0.75% max	0.75% max
Phosphorus (P)	0.045% max	0.045% max	0.045% max
Sulphur (S)	0.030% max	0.030% max	0.030% max
Nitrogen (N)	0.10% max	0.10% max	0.10% max

? All heats verified by NABL-accredited spectrometry. PMI and heat traceability certificates available on request.

Why SS 316 / 316L / 316Ti Alloy Composition Matters for Studs

Mo (2–3%) — Chloride Pitting Resistance

Molybdenum raises the pitting resistance equivalent number (PREN) of SS 316 to approximately 24–26, providing meaningful resistance to chloride-induced pitting in coastal, marine, and mild chemical environments where SS 304 studs would fail prematurely.

316L (C = 0.03%) — Weld Sensitisation Prevention

The ultra-low carbon content of 316L prevents chromium carbide precipitation at grain boundaries during welding or elevated-temperature service. Stud bolt assemblies welded into pressure vessel nozzles retain full corrosion resistance in the heat-affected zone without post-weld annealing.

316Ti (Ti = 5×C) — High-Temperature Stabilisation

Titanium in 316Ti preferentially combines with carbon, permanently preventing sensitisation at service temperatures up to 900°C. This makes 316Ti studs the correct choice for heat exchanger shell flanges, furnace door hardware, and process piping operating in the 400–900°C sensitisation range.

Fastener Performance

SS 316 / 316L / 316Ti Studs Mechanical Properties & Torque Reference

The table below lists mechanical properties and torque reference for SS 316 / 316L / 316Ti Studs per ASTM. SS 316 / 316L / 316Ti studs achieve 620 MPa tensile strength, with hardness, yield, and elongation values verified by NABL-accredited testing and reported in the EN 10204 MTC.

Stud Bolt Torque Reference - SS 316 / 316L (Metric, Lubricated)

Stud Size	Dry (Nm)	Lubricated (Nm)	Clamp Load (kN)
M12	55	44	20
M16	130	104	48
M20	260	208	76
M24	450	360	110
M30	900	720	175
M36	1560	1248	254
M42	2490	1992	350
M48	3700	2960	460

?? Galling Warning: SS 316 studs are prone to galling under high torque. Always use molybdenum disulphide (MoS2) or PTFE-based anti-seize on threads and nut bearing faces. Lubricated values assume K=0.17. Never assemble dry at high torque without anti-galling compound.

Industry Applications

SS 316 / 316L / 316Ti Studs Applications — Industries & End Uses

SS 316 / 316L / 316Ti Studs from RealBolt are specified across food and dairy, pharmaceutical, marine, chemical processing, and oil and gas where very good corrosion resistance and 620 MPa tensile strength are required for reliable fastener performance. Click each industry below for detailed application examples.

Chemical & Petrochemical Processing

SS 316 and 316L stud bolt sets are the standard specification for ASME B16.5 flanged connections in chemical reactors, distillation columns, and process piping handling dilute acids, chloride-bearing process streams, and organic solvents. ASTM A193 B8M / A194 2HM nut sets are supplied as matched heat assemblies with EN 10204 3.1 MTC.

Marine & Coastal Infrastructure

SS 316 studs are specified for marine deck fittings, seawater pump flanges, desalination plant piping, and coastal structural connections where atmospheric chloride exposure demands superior corrosion resistance over SS 304. The molybdenum content provides meaningful protection in splash-zone and tidal environments.

Pharmaceutical & Food Processing Equipment

SS 316L studs are the preferred grade for hygienic process equipment flanges, bioreactor nozzle connections, and CIP/SIP piping assemblies. The low carbon content eliminates sensitisation risk during steam sterilisation cycles, and the smooth electropolished thread finish meets FDA and GMP surface finish requirements.

Heat Exchangers & Pressure Vessels

SS 316Ti stud bolts are specified for TEMA Class B and C heat exchanger channel cover flanges and pressure vessel nozzle connections operating in the 400-900°C sensitisation range. Titanium stabilisation prevents intergranular corrosion in the heat-affected zone without requiring post-weld heat treatment.

SS 316 / 316L / 316Ti Studs Standards & International Certifications

SS 316 / 316L / 316Ti Studs from RealBolt Engineering Industries are manufactured to internationally recognised fastener dimensional standards covering thread form, tolerances, strength grades, and quality requirements. Every batch ships with EN 10204 MTC 3.1/3.2, IS 12427 compliance, ISO 3506 material certification, NACE MR0175, and PMI (XRF) reports — available on request for all orders.

Standards

DIN 938 DIN 939 DIN 976-1 ASME B18.31.2 IS 1364 IS 1367 IS 12427

Certifications

ISO 9001:2015PED 2014/68/EUNABL LabMTC 3.1 / 3.2EN 10204

Buy SS 316 / 316L / 316Ti Studs from India's Leading Manufacturer — Get a Competitive Quote Today

Partner with RealBolt — India’s leading manufacturer of certified SS 316 / 316L / 316Ti Studs — for competitive pricing, EN 10204 MTC 3.1/3.2 documentation, and fast Mumbai dispatch. Standard sizes are ex-stock; custom dimensions accepted with 2–3 week lead time. Request your quote today.

Answers for Buyers

SS 316 / 316L / 316Ti Studs — Frequently Asked Questions

Browse expert answers to common questions about SS 316 / 316L / 316Ti Studs from RealBolt — covering ASTM A193/A194 grades, chloride resistance, temperature limits, sensitization, sizes, and MTC documentation. Contact our technical team directly for project-specific guidance on SS 316 / 316L / 316Ti studs selection and pricing.

What is the difference between SS 316, 316L, and 316Ti studs, and how do I choose the right grade?

SS 316 (UNS S31600) is the standard molybdenum-bearing austenitic grade suitable for most chemical and marine applications up to 425°C continuous service. SS 316L (UNS S31603) has a carbon content limited to 0.03% maximum, which prevents chromium carbide sensitisation during welding – making it the correct choice for stud bolt assemblies welded into pressure vessel nozzles or heat exchanger shells without post-weld annealing. SS 316Ti (UNS S31635) adds titanium stabilisation (minimum 5×C) for applications requiring continuous service in the 400-900°C sensitisation temperature range, such as furnace flanges and high-temperature process piping. For ambient-temperature flanged connections, 316L is the most commonly specified grade due to its weld compatibility and equivalent corrosion resistance to standard 316.

What anti-galling precautions are required when assembling SS 316 stud bolts?

Austenitic stainless steel grades including SS 316 are highly susceptible to galling (cold welding of threads) during assembly, particularly under high torque or rapid tightening. Always apply a molybdenum disulphide (MoS2) paste, PTFE-based anti-seize, or Jet-Lube SS-30 stainless-specific compound to all threads and nut bearing faces before assembly. Reduce target torque values by approximately 20% compared to dry assembly values. Tighten in a star pattern using a calibrated torque wrench. Never use impact wrenches on stainless stud bolt assemblies – the rapid rotation generates frictional heat that initiates galling before full clamp load is achieved.

Are SS 316 / 316L studs suitable for seawater immersion and offshore applications?

SS 316 and 316L studs provide good resistance to atmospheric marine exposure and splash-zone conditions, but are not recommended for continuous full seawater immersion in bolted flange connections. The PREN of approximately 24-26 is insufficient to prevent crevice corrosion under nut bearing faces and washers in stagnant seawater at temperatures above 20°C. For fully immersed subsea or offshore structural connections, duplex SS 2205 (PREN 35+), super duplex SS 2507 (PREN 42+), or Inconel 625 (PREN 51+) studs are the correct specification. SS 316 studs are suitable for above-waterline marine hardware, coastal process piping, and desalination plant connections where full immersion does not occur.

What certifications and test reports are available with SS 316 / 316L / 316Ti stud bolt orders?

Standard supply includes EN 10204 3.1 mill test certificate covering chemical composition and mechanical properties, traceable to the original melt heat number. EN 10204 3.2 TPI-witnessed certificates are available on request for nuclear, defence, and critical pressure vessel applications. Additional testing available includes PMI (positive material identification) by XRF, intergranular corrosion testing per ASTM A262 Practice E (for 316L weld sensitisation verification), hardness survey per NACE MR0175, and dimensional inspection report per DIN 976-1 or ASME B18.31.2. All testing is conducted by NABL-accredited third-party laboratories.

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