TO: Lockheed Martin Corporation QUOTE NUMBER: 021325-0001

ATTN: Bryce Hammon, DNP - ES Purchasing DATE: 02/13/2025

Group
PHONE: 214-912-8834 VALID UNTIL: April 14, 2025
EMAIL: bryce.a.hammon@lmco.com CUSTOMER RFQ NUMBER: 3000531094

QUOTATION DETAILS
PART NAME: Torsion Bar, Suspension
PART NUMBER: 12298917-6L
REVISION: E
QUANTITY: 55 Units
FOB POINT: 8511 Florida Mining Blvd. Tampa, Florida 33634-1221
PAYMENT TERMS: Net 30 Days
LEAD TIME: 10-12 Weeks ARO

SCOPE OF WORK & COMPLIANCE

This quotation includes full compliance with Lockheed Martin’s quality
assurance requirements, including:

• MIL-S-45387 (Torsion Bar, Suspension)

• MIL-M-11472 (Magnetic Particle Inspection)

• MIL-S-13165 (Shot Peening)

• NAVSEA, ITAR, and AS9100 Compliance

• First Article Inspection (FAI) per AS9102

• DFARS-Compliant Material Sourcing

QUOTE BREAKDOWN FOR 55 UNITS

Cost Component Total Cost

Material Cost (4340 Alloy Steel - DFARS Compliant) $4,714.29

Machining Cost (@$148/hr, Fully Burdened) $44,355.71

Inspection & Compliance (MPI, Spline Verification, MIL-STD-

$8,214.29
130)

Tooling & Setup (Custom Fixtures, Spline Gage Calibration) $3,928.57

NRE Cost $15,302.50

TOTAL QUOTED PRICE (55 Units) $76,515.36

ADDITIONAL TERMS & CONDITIONS

• Pricing is valid for 60 days from the quote date.

• Lead time is subject to change based on raw material availability.

• Any changes to part specifications may affect pricing and lead time.

• Shipping costs are not included and will be quoted separately if

required.

• Any special packaging or marking requirements must be confirmed at time

of order.

NEXT STEPS

Please confirm your acceptance of this quotation by issuing a purchase order

referencing this quote number. If you have any questions or require further
clarification, please contact:

[Your Name]
[Your Company Name]
[Your Email]
[Your Phone Number]
We appreciate the opportunity to work with Lockheed Martin and look forward
to fulfilling this order.
Best Regards,
[Your Name]
[Your Title]
[Your Company Name]
Manufacturing Details

1. Additional Spline and Gear Tooth Data

• Tooth Count: 28 teeth

• Diametral Pitch: 16

• Pressure Angle: 45°

• Circular Space Width (Reference): 0.1102 inches

• Pitch Diameter (Reference): 1.7500 inches

• Base Diameter (Reference): 1.2374 inches

• Measurement Between Two Wires (Reference): 1.5097 inches

• Spline Length: 1.020 ± 0.020 inches

• Form Diameter (Min): 1.8165 inches

• Minor Diameter: 1.7063 +0.0000/-0.0005 inches

• Major Diameter Clearance: Must clear form diameter and measurement

wires
2. Inspection and Quality Assurance Requirements

• QAR Compliance: MIL-S-45387 (Torsion Bars)

• Inspection Tools Required:

o Involute GO Composite Ring Gage (Side Fit)

o Not GO Sector Ring Gage

o Tapered Tooth Master Plug

• Inspection Processes:

o Magnetic Particle Inspection (MIL-M-11472)

o Shot Peening Compliance (MIL-S-13165)

o Heat Treatment Verification

o First Article Inspection (FAI)

o 100% Dimensional and Spline Verification

• Measurement Tolerances:

o Concentricity to PD Within 0.0003 FIM

o Surface Plate and Vee Block Setup for Runout Inspection

o Marking and Angular Datum Check Using Composite Ring Gages

3. Additional Processing Steps

• Gaging Setup: Custom ring gages required for spline verification

• Runout and Straightness Check: Vee block and dial indicator testing

• Alignment Verification: Ensuring missing tooth location per

specification

• Heat Treatment and Hardness Test Compliance: MIL-H-6875 standards

QUALITY CONTROL PLAN (QCP)

For: Torsion Bar, Suspension (PN: 12298917-6L)

Prepared For: Lockheed Martin / U.S. Army TARDEC

Revision: A | Date: 02/13/25

1. SCOPE
This Quality Control Plan (QCP) defines the inspection, verification, and
compliance requirements for the manufacturing of Torsion Bar, Suspension (PN:
12298917-6L). This plan ensures adherence to MIL-S-45387, MIL-STD-1916, ITAR
regulations, and Lockheed Martin's Quality Assurance Requirements (QAR).

2. QUALITY OBJECTIVES

• Ensure dimensional accuracy of spline, threads, and overall geometry.

• Maintain surface integrity through heat treatment, shot peening, and

coating.

• Validate torsional strength, hardness, and material properties.

• Meet 100% compliance with inspection and acceptance standards as

outlined in MIL-S-45387.

• Ensure full traceability from raw material to final inspection.

• Adhere to ISO 9001:2015 and AS9100 quality management standards.

3. RESPONSIBILITIES

Role Responsibility

Quality Manager Overall quality assurance and final approval

Production
Monitors in-process quality checks
Supervisor

CNC Operators Ensures machining meets specified tolerances

Inspection
Performs dimensional verification and NDT
Technicians

NDT Level III Conducts and certifies magnetic particle inspection

Inspector (MPI)

Maintains records of material certs, inspection data,

Document Control
and compliance reports
4. PROCESS FLOW & INSPECTION CONTROL PLAN

4.1 Process Flow

1. Raw Material Procurement → 2. Initial Inspection → 3. CNC Machining →
4. Thread Cutting → 5. Spline Milling → 6. Heat Treatment → 7. Shot
Peening → 8. Surface Coating → 9. Final Inspection & Testing → 10.
Packaging & Shipping

4.2 Inspection Control Plan

Process Step Inspection Criteria Method Frequency Acceptance Criteria

DFARS-compliant
Raw Material 4340 Alloy Steel Material Cert
100% supplier, per MIL-S-
Receipt Certification Review
45387

Initial
Diameter, Length, Digital Caliper, First Article +
Dimensional ±0.002” Tolerance
Concentricity CMM 100% Spot Check
Inspection

Tolerance 100% In-Process

CNC Machining CMM & Micrometer Per Drawing Specs
Verification Check

First Article +
Thread Cutting Pitch, Diameter,
Thread Plug Gage 10% Lot GO/NO-GO Gage Check
(1.250-20 UNF-2B) Depth
Sampling

Involute
Spline Profile First Article +
Spline Milling Composite Ring Per Drawing Specs
Accuracy 100% Sampling
Gage

Heat Treatment Hardness & Grain Rockwell C Batch Sample (1

HRC 38-44
(MIL-H-6875) Structure Hardness Test per lot)

Magnetic Particle Surface & Subsurface No Cracks/Defects

ASTM E1444 100%
Inspection (MPI) Defects Allowed

Shot Peening (MIL- Almen Strip First 5 Parts

Coverage & Intensity Per Spec Requirements
S-13165) Verification Per Lot

Surface Coating
XRF Coating 100% Visual +
(Black Oxide / Thickness & Adhesion Per MIL-STD-870
Analysis Lot Testing
Cadmium)

Concentricity,
CMM, Optical Per Drawing
Final Inspection Spline Fit, 100%
Comparator Tolerances
Straightness

Packaging & MIL-STD-130 Part Visual Correct ID and

100%
Marking Marking Inspection Traceability
5. MEASUREMENT EQUIPMENT & TOOLING

Measurement Tool Purpose

CMM (Zeiss Metrology) Precision dimensional validation

Thread Plug Gages (1.250-20 UNF-2B) Thread compliance verification

Involute Composite Ring Gage Spline profile measurement

Digital Micrometers & Verniers Dimensional verification

Rockwell Hardness Tester Post-heat treatment hardness check

Almen Strip & Peening Intensity Meter Shot peening verification

Optical Comparator Visual inspection of fine details

6. SPECIAL QUALITY REQUIREMENTS

6.1 First Article Inspection (FAI)

• 3 initial parts from the first production batch will be fully inspected
per AS9102 FAI standards.

• All material certifications, process sheets, and inspection records

will be submitted to Lockheed Martin’s Quality Assurance team for
review.

6.2 100% Magnetic Particle Inspection (MPI)

• All torsion bars must pass MPI per MIL-M-11472.

• Any part showing cracks, inclusions, or defects will be rejected.

6.3 Torque & Strength Testing

• Each batch will undergo torsional shear testing to ensure compliance

with MIL-S-45387.

• If any part fails, the entire batch is subject to re-evaluation.

6.4 Marking & Traceability

• Parts will be permanently marked per MIL-STD-130 with:

o Part Number

o Manufacturer ID

o Lot Number

o Date Code
7. DOCUMENTATION & RECORD RETENTION

• All inspection and material records will be retained for 10 years.

• Digital and hard copy records will be maintained for auditing and
traceability.

Document Type Retention Period Responsible Party

Material Certifications 10 years Document Control

Inspection Reports 10 years Quality Team

FAI Documentation 10 years Quality Manager

MPI & NDT Records 10 years NDT Level III

8. NON-CONFORMANCE HANDLING

• Any non-conforming part will be logged via Corrective Action Report

(CAR).

• Root Cause Analysis (RCA) will be performed, followed by corrective

actions.

• Non-conforming parts will either:

o Be reworked if possible.

o Be scrapped if unrepairable.

9. CONTINUOUS IMPROVEMENT

• Quarterly reviews of manufacturing and inspection data.

• Process adjustments based on historical rejection rates.

• Supplier quality monitoring for raw material consistency.

10. FINAL APPROVAL

Name Title Signature Date

[Quality Manager] Quality Manager __________ __________

[Production Lead] Manufacturing Supervisor __________ __________

[NDT Level III] Lead NDT Inspector __________ __________