ISO 7380 M12 Titanium Bolts – Grade 5 Ti-6Al-4V Button Head Fasteners for High-Performance Applications

ISO 7380 m12 titanium bolts from Baoji Huacan New Metal Materials Co., Ltd. are precision-engineered Grade 5 (Ti-6Al-4V) button head fasteners built to ISO 7380-1/7380-2 standards. With M12 × 1.75mm thread, tensile strength of 895–1000 MPa, and density of just 4.43 g/cm³, they deliver approximately 45% weight savings over steel. The hexagon socket button head enables high-torque assembly in tight spaces. Length ranges from 20–150mm, with anodized or brushed surface options available. Ideal for motorsport, marine, and aerospace sectors.

Technical Specifications

Parameter	Details

Material Grade

Titanium Grade 5 (Ti-6Al-4V)

Material Standard

ASTM B348 / AMS 4928

Thread Size

M12 × 1.75 Pitch

Head Style

Hex Socket Button Head with Flange

Standard Specification

ISO 7380-1 / ISO 7380-2 (Flanged Type)

Head Diameter

21.0 mm (Typical)

Maximum Head Height

6.6 mm

Hex Socket Size

8 mm

Available Length Range

20–150 mm

Surface Finish

Anodized, Brushed, or Custom Finish

Weight

Approx. 7.8 g/pc

Tensile Strength

≥895 MPa

Density

4.43 g/cm³

Operating Temperature Range

Cryogenic to 400°C

Manufacturing Capability

CNC Machining, Thread Rolling, Custom Production

Customization

OEM / ODM Available

Thread Size		M3	M4	M5	M6	M8	M10	M12	M16
d
P	Pitch	0.5	0.7	0.8	1	1.25	1.5	1.75	2
a	max	1	1.4	1.6	2	2.5	3	3.5	4
a	min	0.5	0.7	0.8	1	1.25	1.5	1.75	2
da	max	3.6	4.7	5.7	6.8	9.2	11.2	14.2	18.2
dk	max	5.7	7.6	9.5	10.5	14	17.5	21	28
dk	min	5.4	7.24	9.14	10.07	13.57	17.07	20.48	27.48
e ①	min	2.3	2.87	3.44	4.58	5.72	6.86	9.15	11.43
k	max	1.65	2.2	2.75	3.3	4.4	5.5	6.6	8.8
k	min	1.4	1.95	2.5	3	4.1	5.2	6.24	8.44
r	min	0.1	0.2	0.2	0.25	0.4	0.4	0.6	0.6
s	Nominal Size	2	2.5	3	4	5	6	8	10
	max	2.045	2.56	3.071	4.084	5.084	6.095	8.115	10.115
	min	2.02	2.52	3.02	4.02	5.02	6.02	8.025	10.025
t	min	1.04	1.3	1.56	2.08	2.6	3.12	4.16	5.2
w	min	0.2	0.3	0.38	0.74	1.05	1.45	1.63	2.25
Minimum tensile load(N) ②	12.9	4910	8506	13800	19600	35700	56600	82400	154000

Motorsport & Automotive

Used on aerodynamic undertrays, body panels, and suspension components. The button head reduces air turbulence, while titanium cuts unsprung mass to sharpen handling dynamics.

Marine & Subsea Engineering

Fastens deck hardware, railings, and electronic enclosures on yachts and submersibles. Saltwater resistance eliminates the corrosion maintenance burden common with 316 stainless steel.

Aerospace & UAV Systems

Secures fairing assemblies and avionics racking where head clearance is critical for ISO 7380 m12 titanium bolts. Non-magnetic properties prevent electromagnetic interference with navigation equipment.

Bicycle & Cycling

Motorcycle Modification

Automotive Performance & Racing

RC Models & Drones

Marine Equipment

Precision Equipment

· Fatigue resistance: Low modulus of elasticity (~113 GPa) provides superior performance under cyclic loading

· Galvanic compatibility: Fully compatible with Carbon Fiber Reinforced Polymer (CFRP) — unlike aluminum, no galvanic corrosion occurs

· Thread integrity: Precision-cut threads meet ISO 7380 tolerances, verified with calibrated Go/No-Go ring gauges

· Surface durability: Anodized finish enhances surface hardness and allows color customization

Material Features

You need fasteners that perform without compromise. These titanium button head bolts give you that edge.

Exceptional Strength-to-Weight Ratio

Grade 5 Ti-6Al-4V delivers tensile strength between 895 MPa and 1000 MPa — comparable to Class 8.8 or 10.9 steel bolts — at only 4.43 g/cm³ density. That's roughly 45% lighter than equivalent steel fasteners, directly reducing unsprung mass in performance builds.

Superior Corrosion Immunity

A stable TiO₂ passive oxide layer forms instantly on the surface. This makes the bolts impervious to chlorides, sulfates, and oxidizing acids — no rust, no pitting, no replacement cycles in marine or chemical environments.

Low-Profile, High-Clearance Design

The rounded dome head minimizes snagging hazards and aerodynamic drag. The internal hex drive lets you apply high torque even where external wrench access is impossible.

Non-Magnetic and Biocompatible

Titanium is non-magnetic and these bolts are safe to use around sensitive navigational or avionics equipment. They also retain structural integrity from cryogenic temperatures to 400°C.

Every bolt starts with vacuum arc remelted (VAR) titanium ingot to ensure chemical homogeneity and low impurity levels. The Ti-6Al-4V billet is precision forged under controlled temperatures, then CNC-machined on our 40+ advanced machining centers.

Thread cutting follows strict ISO tolerance requirements. After machining, each bolt undergoes anodizing or brushing based on your specification. Our 10+ years of titanium machining experience ensures consistent dimensional accuracy across both prototype and mass production runs.


Material Preparation	Heading / Forging	Heat Treatment	Precision Machining

Thread Manufacturing	Cleaning	Inspection	Surface Treatment

Our multi-stage inspection process protects every batch:

· Chemical verification: XRF spectrometry confirms Ti-6Al-4V composition — Al at 5.5–6.75%, V at 3.5–4.5%, per ASTM B348

· Dimensional metrology: CMM and calibrated 6g Go/No-Go thread ring gauges verify head profile, socket depth, and under-head fillet radius

· Mechanical testing: Destructive tensile and wedge loading tests confirm UTS and head-shank integrity

· Surface inspection: Fluorescent dye penetrant inspection (DPI) detects forging laps, cracks, or surface discontinuities

· Hardness testing: Vickers or Rockwell C scale testing confirms heat treatment efficacy (typically 30–36 HRC)

Full documentation — MTC, EN10204 3.1, and COC — available upon request.

Certifications

Baoji Huacan holds ISO 9001 quality management system certification, covering every production stage from raw material intake to final shipment. Production processes comply with ASTM, AMS, and DIN international standards.

You're not limited to a single standard. These bolts are fully customizable to match your application requirements:

· Thread customization: Metric, fine pitch, or special thread profiles per drawing

· Length customization: Any length within or beyond standard range based on your specs

· Surface finish: Anodized in various colors, brushed, natural titanium, or PVD coating

· Material grade: Grade 2, Grade 5, Grade 7, Grade 9, or Grade 23 available

· Logo & marking: Laser marking or CNC engraving of part numbers or brand logos

· Standard variants: ISO 7380-1 (standard) or ISO 7380-2 (flanged) — your choice

Send your drawings or specifications to Joy@hc-titanium.com and we'll confirm feasibility quickly.

Your bolts arrive protected and traceable:

· Custom foam inserts for individual component protection

· Vacuum-sealed bags with desiccants for moisture control

· Sturdy wooden crates for bulk shipments

· Detailed labeling and full documentation for customs clearance and traceability

Shipping options include air freight for urgent orders and sea freight for cost-effective bulk delivery.

Q: What tightening torque is recommended?

A：For M12 Grade 5 titanium, use 60–70 Nm depending on lubrication. Avoid exceeding this — the ISO 7380 socket can strip if over-torqued. Always use MoS₂ anti-seize paste to prevent galling.

Q: Can these replace Class 12.9 steel socket caps?

A：No. Grade 5 titanium is equivalent to Class 8.8 or lower 10.9 steel. Replacing Class 12.9 in structural-critical joints requires engineering validation.

Q: How do I prevent thread galling?

A：Titanium is prone to cold welding under friction. Always apply molybdenum disulfide (MoS₂) paste or a titanium-rated anti-seize lubricant during assembly.

Q: What's the difference between ISO 7380-1 and ISO 7380-2?

A：ISO 7380-1 is a standard button head. ISO 7380-2 adds an integrated flange collar that distributes load over a wider area, removing the need for a separate washer on soft or composite surfaces.

Q: Are these bolts safe to use with carbon fiber panels?

A：Yes. Titanium is galvanically compatible with CFRP. This is a key advantage over aluminum fasteners, which corrode rapidly in contact with carbon fiber.